Remove renderer-side tracking of accelerated compositing

content/browser/renderer_host/render_widget_host_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 457 matching lines @@
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Focus, OnFocus)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Blur, OnBlur)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetCursor, OnSetCursor)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetTouchEventEmulationEnabled,
                         OnSetTouchEventEmulationEnabled)
     IPC_MESSAGE_HANDLER(ViewHostMsg_TextInputTypeChanged,
                         OnTextInputTypeChanged)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ImeCancelComposition,
                         OnImeCancelComposition)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_DidActivateAcceleratedCompositing,
-                        OnDidActivateAcceleratedCompositing)
     IPC_MESSAGE_HANDLER(ViewHostMsg_LockMouse, OnLockMouse)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UnlockMouse, OnUnlockMouse)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowDisambiguationPopup,
                         OnShowDisambiguationPopup)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SelectionChanged, OnSelectionChanged)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SelectionBoundsChanged,
                         OnSelectionBoundsChanged)
 #if defined(OS_WIN)
     IPC_MESSAGE_HANDLER(ViewHostMsg_WindowlessPluginDummyWindowCreated,
                         OnWindowlessPluginDummyWindowCreated)
@@ skipping 1176 matching lines @@
   if (view_)
     view_->ImeCompositionRangeChanged(range, character_bounds);
 }
 #endif
 
 void RenderWidgetHostImpl::OnImeCancelComposition() {
   if (view_)
     view_->ImeCancelComposition();
 }
 
-void RenderWidgetHostImpl::OnDidActivateAcceleratedCompositing(bool activated) {
-  TRACE_EVENT1("renderer_host",
-               "RenderWidgetHostImpl::OnDidActivateAcceleratedCompositing",
-               "activated", activated);
-  is_accelerated_compositing_active_ = activated;
-  if (view_)
-    view_->OnAcceleratedCompositingStateChange();
-}
-
 void RenderWidgetHostImpl::OnLockMouse(bool user_gesture,
                                        bool last_unlocked_by_target,
                                        bool privileged) {
 
   if (pending_mouse_lock_request_) {
     Send(new ViewMsg_LockMouse_ACK(routing_id_, false));
     return;
   } else if (IsMouseLocked()) {
     Send(new ViewMsg_LockMouse_ACK(routing_id_, true));
     return;
@@ skipping 641 matching lines @@
   }
 }
 
 SkBitmap::Config RenderWidgetHostImpl::PreferredReadbackFormat() {
   if (view_)
     return view_->PreferredReadbackFormat();
   return SkBitmap::kARGB_8888_Config;
 }
 
 }  // namespace content