Make RenderWidget responsible for the composited view's lifetime

webkit/compositor_bindings/web_layer_tree_view_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 "web_layer_tree_view_impl.h"
 
 #include "base/command_line.h"
 #include "cc/font_atlas.h"
 #include "cc/input_handler.h"
 #include "cc/layer.h"
@@ skipping 39 matching lines @@
     settings.initialDebugState.showPaintRects = webSettings.showPaintRects;
     settings.initialDebugState.showPlatformLayerTree = webSettings.showPlatformLayerTree;
     settings.initialDebugState.showDebugBorders = webSettings.showDebugBorders;
     settings.implSidePainting = CommandLine::ForCurrentProcess()->HasSwitch(cc::switches::kEnableImplSidePainting);
     m_layerTreeHost = LayerTreeHost::create(this, settings, implThread.Pass());
     if (!m_layerTreeHost.get())
         return false;
     return true;
 }
 
+cc::LayerTreeHost* WebLayerTreeViewImpl::layer_tree_host() const
+{
+    return m_layerTreeHost.get();
+}
+
 void WebLayerTreeViewImpl::setSurfaceReady()
 {
     m_layerTreeHost->setSurfaceReady();
 }
 
 void WebLayerTreeViewImpl::setRootLayer(const WebLayer& root)
 {
     m_layerTreeHost->setRootLayer(static_cast<const WebLayerImpl*>(&root)->layer());
 }
 
@@ skipping 213 matching lines @@
 {
     m_client->didCompleteSwapBuffers();
 }
 
 void WebLayerTreeViewImpl::scheduleComposite()
 {
     m_client->scheduleComposite();
 }
 
 } // namespace WebKit