diff --git a/b2g/components/ContentPermissionPrompt.js b/b2g/components/ContentPermissionPrompt.js
index 86cf0c5e086..070450babbd 100644
--- a/b2g/components/ContentPermissionPrompt.js
+++ b/b2g/components/ContentPermissionPrompt.js
@@ -13,7 +13,7 @@ const Cr = Components.results;
 const Cu = Components.utils;
 const Cc = Components.classes;
 
-const PROMPT_FOR_UNKNOWN = ["geolocation", "desktop-notification"];
+const PROMPT_FOR_UNKNOWN = ["geolocation", "desktop-notification", "audio-capture"];
 
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
diff --git a/dom/apps/src/PermissionsTable.jsm b/dom/apps/src/PermissionsTable.jsm
index 1fa7f2f35a9..f3f7f3d399e 100644
--- a/dom/apps/src/PermissionsTable.jsm
+++ b/dom/apps/src/PermissionsTable.jsm
@@ -292,6 +292,11 @@ this.PermissionsTable =  { geolocation: {
                              privileged: DENY_ACTION,
                              certified: ALLOW_ACTION
                            },
+                           "audio-capture": {
+                             app: PROMPT_ACTION,
+                             privileged: PROMPT_ACTION,
+                             certified: PROMPT_ACTION
+                           },
                          };
 
 /**
diff --git a/dom/media/MediaManager.cpp b/dom/media/MediaManager.cpp
index ae3706b1059..1816664aae7 100644
--- a/dom/media/MediaManager.cpp
+++ b/dom/media/MediaManager.cpp
@@ -38,6 +38,10 @@
 #include "MediaEngineWebRTC.h"
 #endif
 
+#ifdef MOZ_WIDGET_GONK
+#include "MediaPermissionGonk.h"
+#endif
+
 // GetCurrentTime is defined in winbase.h as zero argument macro forwarding to
 // GetTickCount() and conflicts with MediaStream::GetCurrentTime.
 #ifdef GetCurrentTime
@@ -1192,6 +1196,10 @@ MediaManager::GetUserMedia(JSContext* aCx, bool aPrivileged,
     // Force MediaManager to startup before we try to access it from other threads
     // Hack: should init singleton earlier unless it's expensive (mem or CPU)
     (void) MediaManager::Get();
+#ifdef MOZ_WIDGET_GONK
+    // Initialize MediaPermissionManager before send out any permission request.
+    (void) MediaPermissionManager::GetInstance();
+#endif //MOZ_WIDGET_GONK
   }
 
   // Store the WindowID in a hash table and mark as active. The entry is removed
@@ -1252,10 +1260,7 @@ MediaManager::GetUserMedia(JSContext* aCx, bool aPrivileged,
 
 #ifdef MOZ_B2G_CAMERA
   if (mCameraManager == nullptr) {
-    aPrivileged = nsDOMCameraManager::CheckPermission(aWindow);
-    if (aPrivileged) {
-      mCameraManager = nsDOMCameraManager::CreateInstance(aWindow);
-    }
+    mCameraManager = nsDOMCameraManager::CreateInstance(aWindow);
   }
 #endif
 
diff --git a/dom/media/MediaPermissionGonk.cpp b/dom/media/MediaPermissionGonk.cpp
new file mode 100644
index 00000000000..8ce436ba3be
--- /dev/null
+++ b/dom/media/MediaPermissionGonk.cpp
@@ -0,0 +1,427 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "MediaManager.h"
+#include "MediaPermissionGonk.h"
+
+#include "nsCOMPtr.h"
+#include "nsCxPusher.h"
+#include "nsIContentPermissionPrompt.h"
+#include "nsIDocument.h"
+#include "nsIDOMNavigatorUserMedia.h"
+#include "nsISupportsArray.h"
+#include "nsPIDOMWindow.h"
+#include "nsTArray.h"
+#include "GetUserMediaRequest.h"
+#include "PCOMContentPermissionRequestChild.h"
+#include "mozilla/dom/PBrowserChild.h"
+#include "mozilla/dom/TabChild.h"
+#include "mozilla/dom/MediaStreamTrackBinding.h"
+
+#define AUDIO_PERMISSION_NAME "audio-capture"
+
+namespace mozilla {
+
+static MediaPermissionManager *gMediaPermMgr = nullptr;
+
+// Helper function for notifying permission granted
+static nsresult
+NotifyPermissionAllow(const nsAString &aCallID, nsTArray<nsCOMPtr<nsIMediaDevice> > &aDevices)
+{
+  nsresult rv;
+  nsCOMPtr<nsISupportsArray> array;
+  rv = NS_NewISupportsArray(getter_AddRefs(array));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  for (uint32_t i = 0; i < aDevices.Length(); ++i) {
+    rv = array->AppendElement(aDevices.ElementAt(i));
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+  NS_ENSURE_TRUE(obs, NS_ERROR_FAILURE);
+
+  return obs->NotifyObservers(array, "getUserMedia:response:allow",
+                              aCallID.BeginReading());
+}
+
+// Helper function for notifying permision denial or error
+static nsresult
+NotifyPermissionDeny(const nsAString &aCallID, const nsAString &aErrorMsg)
+{
+  nsresult rv;
+  nsCOMPtr<nsISupportsString> supportsString =
+    do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = supportsString->SetData(aErrorMsg);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+  NS_ENSURE_TRUE(obs, NS_ERROR_FAILURE);
+
+  return obs->NotifyObservers(supportsString, "getUserMedia:response:deny",
+                              aCallID.BeginReading());
+}
+
+namespace {
+
+/**
+ * MediaPermissionRequest will send a prompt ipdl request to b2g process according
+ * to its owned type.
+ */
+class MediaPermissionRequest : public nsIContentPermissionRequest
+                             , public PCOMContentPermissionRequestChild
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSICONTENTPERMISSIONREQUEST
+
+  MediaPermissionRequest(nsRefPtr<dom::GetUserMediaRequest> &aRequest,
+                         nsTArray<nsCOMPtr<nsIMediaDevice> > &aDevices);
+  virtual ~MediaPermissionRequest() {}
+
+  // It will be called when prompt dismissed.
+  virtual bool Recv__delete__(const bool &allow) MOZ_OVERRIDE;
+  virtual void IPDLRelease() MOZ_OVERRIDE { Release(); }
+
+  already_AddRefed<nsPIDOMWindow> GetOwner();
+
+private:
+  bool mAudio; // Request for audio permission
+  nsRefPtr<dom::GetUserMediaRequest> mRequest;
+  nsTArray<nsCOMPtr<nsIMediaDevice> > mDevices; // candiate device list
+};
+
+// MediaPermissionRequest
+NS_IMPL_ISUPPORTS1(MediaPermissionRequest, nsIContentPermissionRequest)
+
+MediaPermissionRequest::MediaPermissionRequest(nsRefPtr<dom::GetUserMediaRequest> &aRequest,
+                                               nsTArray<nsCOMPtr<nsIMediaDevice> > &aDevices)
+  : mRequest(aRequest)
+{
+  dom::MediaStreamConstraintsInternal constraints;
+  mRequest->GetConstraints(constraints);
+
+  mAudio = constraints.mAudio;
+
+  for (uint32_t i = 0; i < aDevices.Length(); ++i) {
+    nsCOMPtr<nsIMediaDevice> device(aDevices[i]);
+    nsAutoString deviceType;
+    device->GetType(deviceType);
+    if (mAudio && deviceType.EqualsLiteral("audio")) {
+      mDevices.AppendElement(device);
+    }
+  }
+}
+
+// nsIContentPermissionRequest methods
+NS_IMETHODIMP
+MediaPermissionRequest::GetPrincipal(nsIPrincipal **aRequestingPrincipal)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingPrincipal);
+
+  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(mRequest->GetParentObject());
+  NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+  nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
+  NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
+
+  NS_ADDREF(*aRequestingPrincipal = doc->NodePrincipal());
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MediaPermissionRequest::GetType(nsACString &aType)
+{
+  if (mAudio) {
+    aType = AUDIO_PERMISSION_NAME;
+    return NS_OK;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MediaPermissionRequest::GetAccess(nsACString &aAccess)
+{
+  aAccess = "unused";
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MediaPermissionRequest::GetWindow(nsIDOMWindow** aRequestingWindow)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingWindow);
+  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(mRequest->GetParentObject());
+  window.forget(aRequestingWindow);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MediaPermissionRequest::GetElement(nsIDOMElement** aRequestingElement)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingElement);
+  *aRequestingElement = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MediaPermissionRequest::Cancel()
+{
+  nsString callID;
+  mRequest->GetCallID(callID);
+  NotifyPermissionDeny(callID, NS_LITERAL_STRING("Permission Denied"));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+MediaPermissionRequest::Allow()
+{
+  nsString callID;
+  mRequest->GetCallID(callID);
+  NotifyPermissionAllow(callID, mDevices);
+  return NS_OK;
+}
+
+already_AddRefed<nsPIDOMWindow>
+MediaPermissionRequest::GetOwner()
+{
+  nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(mRequest->GetParentObject());
+  return window.forget();
+}
+
+//PCOMContentPermissionRequestChild
+bool
+MediaPermissionRequest::Recv__delete__(const bool& allow)
+{
+  if (allow) {
+    (void) Allow();
+  } else {
+    (void) Cancel();
+  }
+  return true;
+}
+
+// Success callback for MediaManager::GetUserMediaDevices().
+class MediaDeviceSuccessCallback: public nsIGetUserMediaDevicesSuccessCallback
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIGETUSERMEDIADEVICESSUCCESSCALLBACK
+
+  MediaDeviceSuccessCallback(nsRefPtr<dom::GetUserMediaRequest> &aRequest)
+    : mRequest(aRequest) {}
+  virtual ~MediaDeviceSuccessCallback() {}
+
+private:
+  nsresult DoPrompt(nsRefPtr<MediaPermissionRequest> &req);
+  nsRefPtr<dom::GetUserMediaRequest> mRequest;
+};
+
+NS_IMPL_ISUPPORTS1(MediaDeviceSuccessCallback, nsIGetUserMediaDevicesSuccessCallback)
+
+// nsIGetUserMediaDevicesSuccessCallback method
+NS_IMETHODIMP
+MediaDeviceSuccessCallback::OnSuccess(nsIVariant* aDevices)
+{
+  nsIID elementIID;
+  uint16_t elementType;
+  void* rawArray;
+  uint32_t arrayLen;
+
+  nsresult rv;
+  rv = aDevices->GetAsArray(&elementType, &elementIID, &arrayLen, &rawArray);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (elementType != nsIDataType::VTYPE_INTERFACE) {
+    NS_Free(rawArray);
+    return NS_ERROR_FAILURE;
+  }
+
+  // Create array for nsIMediaDevice
+  nsTArray<nsCOMPtr<nsIMediaDevice> > devices;
+
+  nsISupports **supportsArray = reinterpret_cast<nsISupports **>(rawArray);
+  for (uint32_t i = 0; i < arrayLen; ++i) {
+    nsCOMPtr<nsIMediaDevice> device(do_QueryInterface(supportsArray[i]));
+    devices.AppendElement(device);
+    NS_IF_RELEASE(supportsArray[i]); // explicitly decrease reference count for raw pointer
+  }
+  NS_Free(rawArray); // explicitly free for the memory from nsIVariant::GetAsArray
+
+  // Send MediaPermissionRequest
+  nsRefPtr<MediaPermissionRequest> req = new MediaPermissionRequest(mRequest, devices);
+  rv = DoPrompt(req);
+
+  NS_ENSURE_SUCCESS(rv, rv);
+  return NS_OK;
+}
+
+// Trigger permission prompt UI
+nsresult
+MediaDeviceSuccessCallback::DoPrompt(nsRefPtr<MediaPermissionRequest> &req)
+{
+  // for content process
+  if (XRE_GetProcessType() == GeckoProcessType_Content) {
+    MOZ_ASSERT(NS_IsMainThread()); // IPC can only be execute on main thread.
+
+    nsresult rv;
+
+    nsCOMPtr<nsPIDOMWindow> window(req->GetOwner());
+    NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
+
+    dom::TabChild* child = dom::TabChild::GetFrom(window->GetDocShell());
+    NS_ENSURE_TRUE(child, NS_ERROR_FAILURE);
+
+    nsAutoCString type;
+    rv = req->GetType(type);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsAutoCString access;
+    rv = req->GetAccess(access);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIPrincipal> principal;
+    rv = req->GetPrincipal(getter_AddRefs(principal));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    req->AddRef();
+    child->SendPContentPermissionRequestConstructor(req,
+                                                    type,
+                                                    access,
+                                                    IPC::Principal(principal));
+
+    req->Sendprompt();
+    return NS_OK;
+  }
+
+  // for chrome process
+  nsCOMPtr<nsIContentPermissionPrompt> prompt =
+      do_GetService(NS_CONTENT_PERMISSION_PROMPT_CONTRACTID);
+  if (prompt) {
+    prompt->Prompt(req);
+  }
+  return NS_OK;
+}
+
+// Error callback for MediaManager::GetUserMediaDevices()
+class MediaDeviceErrorCallback: public nsIDOMGetUserMediaErrorCallback
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIDOMGETUSERMEDIAERRORCALLBACK
+
+  MediaDeviceErrorCallback(const nsAString &aCallID)
+    : mCallID(aCallID) {}
+
+  virtual ~MediaDeviceErrorCallback() {}
+
+private:
+  const nsString mCallID;
+};
+
+NS_IMPL_ISUPPORTS1(MediaDeviceErrorCallback, nsIDOMGetUserMediaErrorCallback)
+
+// nsIDOMGetUserMediaErrorCallback method
+NS_IMETHODIMP
+MediaDeviceErrorCallback::OnError(const nsAString &aError)
+{
+  return NotifyPermissionDeny(mCallID, aError);
+}
+
+} // namespace anonymous
+
+// MediaPermissionManager
+NS_IMPL_ISUPPORTS1(MediaPermissionManager, nsIObserver)
+
+MediaPermissionManager*
+MediaPermissionManager::GetInstance()
+{
+  if (!gMediaPermMgr) {
+    gMediaPermMgr = new MediaPermissionManager();
+  }
+
+  return gMediaPermMgr;
+}
+
+MediaPermissionManager::MediaPermissionManager()
+{
+  nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+  if (obs) {
+    obs->AddObserver(this, "getUserMedia:request", false);
+    obs->AddObserver(this, "xpcom-shutdown", false);
+  }
+}
+
+MediaPermissionManager::~MediaPermissionManager()
+{
+  this->Deinit();
+}
+
+nsresult
+MediaPermissionManager::Deinit()
+{
+  nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
+  if (obs) {
+    obs->RemoveObserver(this, "getUserMedia:request");
+    obs->RemoveObserver(this, "xpcom-shutdown");
+  }
+  return NS_OK;
+}
+
+// nsIObserver method
+NS_IMETHODIMP
+MediaPermissionManager::Observe(nsISupports* aSubject, const char* aTopic,
+  const PRUnichar* aData)
+{
+  nsresult rv;
+  if (!strcmp(aTopic, "getUserMedia:request")) {
+    nsRefPtr<dom::GetUserMediaRequest> req =
+        static_cast<dom::GetUserMediaRequest*>(aSubject);
+    rv = HandleRequest(req);
+
+    if (NS_FAILED(rv)) {
+      nsString callID;
+      req->GetCallID(callID);
+      NotifyPermissionDeny(callID, NS_LITERAL_STRING("unable to enumerate media device"));
+    }
+  } else if (!strcmp(aTopic, "xpcom-shutdown")) {
+    rv = this->Deinit();
+  } else {
+    // not reachable
+    rv = NS_ERROR_FAILURE;
+  }
+  return rv;
+}
+
+// Handle GetUserMediaRequest, query available media device first.
+nsresult
+MediaPermissionManager::HandleRequest(nsRefPtr<dom::GetUserMediaRequest> &req)
+{
+  nsString callID;
+  req->GetCallID(callID);
+
+  nsCOMPtr<nsPIDOMWindow> innerWindow = do_QueryInterface(req->GetParentObject());
+  if (!innerWindow) {
+    MOZ_ASSERT(false, "No inner window");
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIGetUserMediaDevicesSuccessCallback> onSuccess =
+      new MediaDeviceSuccessCallback(req);
+  nsCOMPtr<nsIDOMGetUserMediaErrorCallback> onError =
+      new MediaDeviceErrorCallback(callID);
+
+  dom::MediaStreamConstraintsInternal constraints;
+  req->GetConstraints(constraints);
+
+  nsRefPtr<MediaManager> MediaMgr = MediaManager::GetInstance();
+  nsresult rv = MediaMgr->GetUserMediaDevices(innerWindow, constraints, onSuccess, onError);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return NS_OK;
+}
+
+} // namespace mozilla
diff --git a/dom/media/MediaPermissionGonk.h b/dom/media/MediaPermissionGonk.h
new file mode 100644
index 00000000000..947e4f3fd2f
--- /dev/null
+++ b/dom/media/MediaPermissionGonk.h
@@ -0,0 +1,36 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_MEDIA_MEDIAPERMISSIONGONK_H
+#define DOM_MEDIA_MEDIAPERMISSIONGONK_H
+
+#include "nsError.h"
+#include "nsIObserver.h"
+#include "nsISupportsImpl.h"
+#include "GetUserMediaRequest.h"
+
+namespace mozilla {
+
+/**
+ * The observer to create the MediaPermissionMgr. This is the entry point of
+ * permission request on b2g.
+ */
+class MediaPermissionManager : public nsIObserver
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+
+  static MediaPermissionManager* GetInstance();
+  virtual ~MediaPermissionManager();
+
+private:
+  MediaPermissionManager();
+  nsresult Deinit();
+  nsresult HandleRequest(nsRefPtr<dom::GetUserMediaRequest> &req);
+};
+
+} // namespace mozilla
+#endif // DOM_MEDIA_MEDIAPERMISSIONGONK_H
+
diff --git a/dom/media/moz.build b/dom/media/moz.build
index 66e0bf361c5..83636aba9a4 100644
--- a/dom/media/moz.build
+++ b/dom/media/moz.build
@@ -37,6 +37,14 @@ EXTRA_COMPONENTS += [
     'PeerConnection.manifest',
 ]
 
+if CONFIG['MOZ_B2G']:
+    EXPORTS.mozilla += [
+        'MediaPermissionGonk.h',
+    ]
+    CPP_SOURCES += [
+        'MediaPermissionGonk.cpp',
+    ]
+
 FAIL_ON_WARNINGS = True
 
 LIBXUL_LIBRARY = True