diff --git a/services/sky/platform_impl.cc b/services/sky/platform_impl.cc
index a26df3693..0f5eb5717 100644
--- a/services/sky/platform_impl.cc
+++ b/services/sky/platform_impl.cc
@@ -4,10 +4,26 @@
 
 #include "services/sky/platform_impl.h"
 
+#include "base/bind.h"
+#include "mojo/message_pump/message_pump_mojo.h"
+
 namespace sky {
+namespace {
+
+scoped_ptr<base::MessagePump> CreateMessagePumpMojo() {
+  return make_scoped_ptr(new mojo::common::MessagePumpMojo);
+}
+
+} // namespace
 
 PlatformImpl::PlatformImpl()
-    : main_thread_task_runner_(base::MessageLoop::current()->task_runner()) {
+    : ui_task_runner_(base::MessageLoop::current()->task_runner()) {
+  base::Thread::Options options;
+  options.message_pump_factory = base::Bind(&CreateMessagePumpMojo);
+
+  io_thread_.reset(new base::Thread("io_thread"));
+  io_thread_->StartWithOptions(options);
+  io_task_runner_ = io_thread_->message_loop()->task_runner();
 }
 
 PlatformImpl::~PlatformImpl() {
@@ -17,8 +33,12 @@ blink::WebString PlatformImpl::defaultLocale() {
   return blink::WebString::fromUTF8("en-US");
 }
 
-base::SingleThreadTaskRunner* PlatformImpl::mainThreadTaskRunner() {
-  return main_thread_task_runner_.get();
+base::SingleThreadTaskRunner* PlatformImpl::GetUITaskRunner() {
+  return ui_task_runner_.get();
+}
+
+base::SingleThreadTaskRunner* PlatformImpl::GetIOTaskRunner() {
+  return io_task_runner_.get();
 }
 
 }  // namespace sky
diff --git a/services/sky/platform_impl.h b/services/sky/platform_impl.h
index c52a9be42..6f4361a5d 100644
--- a/services/sky/platform_impl.h
+++ b/services/sky/platform_impl.h
@@ -7,6 +7,7 @@
 
 #include "base/message_loop/message_loop.h"
 #include "sky/engine/public/platform/Platform.h"
+#include "base/threading/thread.h"
 
 namespace sky {
 
@@ -17,10 +18,14 @@ class PlatformImpl : public blink::Platform {
 
   // blink::Platform methods:
   blink::WebString defaultLocale() override;
-  base::SingleThreadTaskRunner* mainThreadTaskRunner() override;
+  base::SingleThreadTaskRunner* GetUITaskRunner() override;
+  base::SingleThreadTaskRunner* GetIOTaskRunner() override;
 
  private:
-  scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
+  scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
+  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
+
+  scoped_ptr<base::Thread> io_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformImpl);
 };
diff --git a/sky/engine/core/loader/CanvasImageDecoder.cpp b/sky/engine/core/loader/CanvasImageDecoder.cpp
index 2e639eeb7..3a7ebe010 100644
--- a/sky/engine/core/loader/CanvasImageDecoder.cpp
+++ b/sky/engine/core/loader/CanvasImageDecoder.cpp
@@ -39,7 +39,7 @@ void CanvasImageDecoder::initWithConsumer(mojo::ScopedDataPipeConsumerHandle han
 }
 
 void CanvasImageDecoder::initWithList(const Uint8List& list) {
-  RefPtr<SharedBuffer> buffer = SharedBuffer::create(list.num_elements());
+  RefPtr<SharedBuffer> buffer = SharedBuffer::create();
   buffer->append(reinterpret_cast<const char*>(list.data()),
                  list.num_elements());
   base::MessageLoop::current()->PostTask(