Enable Canvas2D hardware acceleration for Android WebView

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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 "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 1817 matching lines @@
   }
 
   if (success) {
     if (offscreen_context_provider.get() &&
         !offscreen_context_provider->BindToCurrentThread())
       success = false;
   }
 
   if (success) {
     EnforceZeroBudget(false);
+    client_->OnGetRendererCapabilities();
     client_->SetNeedsCommitOnImplThread();
   } else {
     if (offscreen_context_provider.get()) {
       if (offscreen_context_provider->BindToCurrentThread())
         offscreen_context_provider->VerifyContexts();
       offscreen_context_provider = NULL;
     }
 
     client_->DidLoseOutputSurfaceOnImplThread();
 
@@ skipping 32 matching lines @@
   DCHECK(renderer_);
 
   EnforceZeroBudget(true);
   CreateAndSetTileManager(resource_provider_.get(),
                           NULL,
                           GetRendererCapabilities().using_map_image);
   DCHECK(tile_manager_);
 
   SetOffscreenContextProvider(NULL);
 
+  client_->OnGetRendererCapabilities();
   client_->SetNeedsCommitOnImplThread();
 }
 
 void LayerTreeHostImpl::SetViewportSize(gfx::Size device_viewport_size) {
   if (device_viewport_size == device_viewport_size_)
     return;
 
   if (pending_tree_)
     active_tree_->SetViewportSizeInvalid();
 
@@ skipping 1014 matching lines @@
   swap_promise_monitor_.erase(monitor);
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfSetNeedsRedraw() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 }  // namespace cc