Force accelerated compositing for browser_plugin guest's RenderView.

content/renderer/browser_plugin/old/browser_plugin_channel_manager.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/renderer/browser_plugin/old/browser_plugin_channel_manager.h"
 
 #include "base/process_util.h"
 #include "content/common/browser_plugin_messages.h"
 #include "content/common/view_messages.h"
 #include "content/renderer/browser_plugin/old/browser_plugin.h"
 #include "content/renderer/browser_plugin/old/guest_to_embedder_channel.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "ppapi/c/pp_instance.h"
+#include "webkit/glue/webpreferences.h"
+
+using webkit_glue::WebPreferences;
 
 namespace content {
 
 BrowserPluginChannelManager::BrowserPluginChannelManager() {
 }
 
 BrowserPluginChannelManager::~BrowserPluginChannelManager() {
 }
 
 void BrowserPluginChannelManager::CreateRenderView(
@@ skipping 14 matching lines @@
     // This ensures this process will be notified when it is closed even if a
     // connection is not established.
     embedder_channel_handle.socket =
         base::FileDescriptor(channel->TakeRendererFD(), true);
     if (embedder_channel_handle.socket.fd == -1)
       success = false;
 #endif
     DCHECK(success);
     embedder_channels_[params.embedder_channel_name] = channel;
   }
+
+  // Force compositing on browser tag guests since software rendering path is
+  // not implemented (yet). Short term solution so force compositing is not
+  // required to be set globally.
+  WebPreferences modified_web_preferences = params.web_preferences;
+  modified_web_preferences.force_compositing_mode = true;
+
   RenderViewImpl* render_view =
     RenderViewImpl::Create(
         params.parent_window,
         params.opener_route_id,
         params.renderer_preferences,
-        params.web_preferences,
+        modified_web_preferences,
         new SharedRenderViewCounter(0),
         params.view_id,
         params.surface_id,
         params.session_storage_namespace_id,
         params.frame_name,
         false,
         params.swapped_out,
         params.next_page_id,
         params.screen_info,
         channel,
@@ skipping 70 matching lines @@
   browser_plugin->LoadGuest(guest_process_id, channel_handle);
 }
 
 void BrowserPluginChannelManager::OnAdvanceFocus(int instance_id,
                                                  bool reverse) {
   BrowserPlugin* browser_plugin = BrowserPlugin::FromID(instance_id);
   browser_plugin->AdvanceFocus(reverse);
 }
 
 }  // namespace content