Add HostSharedBitmapManagerClient to organize bitmaps coming from renderers.

content/browser/renderer_host/render_message_filter.h

Index: content/browser/renderer_host/render_message_filter.h
diff --git a/content/browser/renderer_host/render_message_filter.h b/content/browser/renderer_host/render_message_filter.h
index d8582e6abcc4bfaa6e45f286b12dff89bc007e4b..877ddd0a7c62c905a353c510e3dd2d26df7617f9 100644
--- a/content/browser/renderer_host/render_message_filter.h
+++ b/content/browser/renderer_host/render_message_filter.h
@@ -20,6 +20,7 @@
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 #include "cc/resources/shared_bitmap_manager.h"
+#include "content/common/host_shared_bitmap_manager.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/common/three_d_api_types.h"
 #include "ipc/message_filter.h"
@@ -310,6 +311,8 @@ class CONTENT_EXPORT RenderMessageFilter : public BrowserMessageFilter {
   PluginServiceImpl* plugin_service_;
   base::FilePath profile_data_directory_;
 
+  HostSharedBitmapManagerClient bitmap_manager_client_;
+
   // Contextual information to be used for requests created here.
   scoped_refptr<net::URLRequestContextGetter> request_context_;