Bug 937317 - Remove unnecessary AutoSystemCaller usage. r=bz

See bug 937317 comment 38.

content/base/src/nsImageLoadingContent.cpp

@@ -54,7 +54,6 @@
 #endif
 
 using namespace mozilla;
-using mozilla::dom::AutoSystemCaller;
 
 #ifdef DEBUG_chb
 static void PrintReqURL(imgIRequest* req) {
@@ -1195,9 +1194,6 @@ nsImageLoadingContent::ClearPendingRequest(nsresult aReason,
   if (!mPendingRequest)
     return;
 
-  // See bug 604262.
-  AutoSystemCaller asc;
-
   // Deregister this image from the refresh driver so it no longer receives
   // notifications.
   nsLayoutUtils::DeregisterImageRequest(GetFramePresContext(), mPendingRequest,
@@ -1257,10 +1253,6 @@ nsImageLoadingContent::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
   if (!aDocument)
     return;
 
-  // Make sure the callbacks triggered by the below code don't think they're
-  // being called from JS.
-  AutoSystemCaller asc;
-
   TrackImage(mCurrentRequest);
   TrackImage(mPendingRequest);
 
@@ -1276,10 +1268,6 @@ nsImageLoadingContent::UnbindFromTree(bool aDeep, bool aNullParent)
   if (!doc)
     return;
 
-  // Make sure the callbacks triggered by the below code don't think they're
-  // being called from JS.
-  AutoSystemCaller asc;
-
   UntrackImage(mCurrentRequest);
   UntrackImage(mPendingRequest);
 

dom/src/geolocation/nsGeolocation.cpp

@@ -25,7 +25,6 @@
 #include "mozilla/ClearOnShutdown.h"
 #include "PCOMContentPermissionRequestChild.h"
 #include "mozilla/dom/PermissionMessageUtils.h"
-#include "mozilla/dom/ScriptSettings.h"
 
 class nsIPrincipal;
 
@@ -295,9 +294,6 @@ PositionError::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope)
 void
 PositionError::NotifyCallback(const GeoPositionErrorCallback& aCallback)
 {
-  // We need to be system here. See bug 452762.
-  AutoSystemCaller asc;
-
   nsAutoMicroTask mt;
   if (aCallback.HasWebIDLCallback()) {
     PositionErrorCallback* callback = aCallback.GetWebIDLCallback();
@@ -529,8 +525,6 @@ nsGeolocationRequest::SendLocation(nsIDOMGeoPosition* aPosition)
     Shutdown();
   }
 
-  // We need to be system here. See bug 452762.
-  AutoSystemCaller asc;
   nsAutoMicroTask mt;
   if (mCallback.HasWebIDLCallback()) {
     ErrorResult err;

layout/base/nsLayoutUtils.cpp

@@ -73,7 +73,6 @@
 #include "ActiveLayerTracker.h"
 #include "mozilla/gfx/2D.h"
 
-#include "mozilla/dom/ScriptSettings.h"
 #include "mozilla/Preferences.h"
 
 #ifdef MOZ_XUL
@@ -4781,10 +4780,6 @@ nsLayoutUtils::SurfaceFromElement(nsIImageLoadingContent* aElement,
     wantImageSurface = true;
   }
 
-  // Force a system caller so that the below code doesn't think it's being
-  // called by JS. See bug 604262.
-  AutoSystemCaller asc;
-
   nsCOMPtr<imgIRequest> imgRequest;
   rv = aElement->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
                             getter_AddRefs(imgRequest));

layout/generic/nsVideoFrame.cpp

@@ -26,7 +26,6 @@
 #include "ImageContainer.h"
 #include "ImageLayers.h"
 #include "nsContentList.h"
-#include "mozilla/dom/ScriptSettings.h"
 #include <algorithm>
 
 using namespace mozilla;
@@ -75,9 +74,6 @@ nsVideoFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
     mPosterImage = element;
     NS_ENSURE_TRUE(mPosterImage, NS_ERROR_OUT_OF_MEMORY);
 
-    // See bug 604262.
-    AutoSystemCaller asc;
-
     // Set the nsImageLoadingContent::ImageState() to 0. This means that the
     // image will always report its state as 0, so it will never be reframed
     // to show frames for loading or the broken image icon. This is important,