Refactor code listening to platform events in content/renderer/.

This is introducing PlatformEventObserver, being used by code observing
and requesting platform events like Gamepad, Device Motion, Device
Orientation, Device Light and Battery.

BUG=400158

Review URL: https://codereview.chromium.org/446603002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288555 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 12 deletions

diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index d5cdab0..421850e 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -36,7 +36,6 @@ struct WorkerProcessMsg_CreateWorker_Params;
 
 namespace blink {
 class WebGamepads;
-class WebGamepadListener;
 class WebGraphicsContext3D;
 class WebMediaStreamCenter;
 class WebMediaStreamCenterClient;
@@ -84,7 +83,6 @@ class DBMessageFilter;
 class DevToolsAgentFilter;
 class DomStorageDispatcher;
 class EmbeddedWorkerDispatcher;
-class GamepadSharedMemoryReader;
 class GpuChannelHost;
 class IndexedDBDispatcher;
 class InputEventFilter;
@@ -288,10 +286,6 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
     return vc_manager_.get();
   }
 
-  GamepadSharedMemoryReader* gamepad_shared_memory_reader() const {
-    return gamepad_shared_memory_reader_.get();
-  }
-
   // Get the GPU channel. Returns NULL if the channel is not established or
   // has been lost.
   GpuChannelHost* GetGpuChannel();
@@ -389,10 +383,6 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
   // Retrieve current gamepad data.
   void SampleGamepads(blink::WebGamepads* data);
 
-  // Set a listener for gamepad connected/disconnected events.
-  // A non-null listener must be set first before calling SampleGamepads.
-  void SetGamepadListener(blink::WebGamepadListener* listener);
-
   // Called by a RenderWidget when it is created or destroyed. This
   // allows the process to know when there are no visible widgets.
   void WidgetCreated();
@@ -563,8 +553,6 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
 
   scoped_ptr<WebRTCIdentityService> webrtc_identity_service_;
 
-  scoped_ptr<GamepadSharedMemoryReader> gamepad_shared_memory_reader_;
-
   // TODO(reveman): Allow AllocateGpuMemoryBuffer to be called from
   // multiple threads. Current allocation mechanism for IOSurface
   // backed GpuMemoryBuffers prevent this. crbug.com/325045