Replacing allocate bitmap IPC messages with a new Mojo interface.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 3ae504a137971e138fdb33d683652419a05aa2bf..968802f571031281370978093687b4b9f8e2de3d 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -663,6 +663,14 @@ void RenderThreadImpl::Init(
   gpu_memory_buffer_manager_ =
       base::MakeUnique<ChildGpuMemoryBufferManager>(thread_safe_sender());
 
+  thread_safe_associated_interface_ptr_provider_ =
+      base::MakeUnique<ThreadSafeAssociatedInterfacePtrProvider>(channel());
+  thread_safe_render_message_filter_ =
+      thread_safe_associated_interface_ptr_provider_
+          ->CreateInterfacePtr<mojom::RenderMessageFilter>();
+  shared_bitmap_manager_.reset(
+      new ChildSharedBitmapManager(thread_safe_render_message_filter_));
+
   InitializeWebKit(resource_task_queue);
 
   // In single process the single process is all there is.
@@ -695,12 +703,6 @@ void RenderThreadImpl::Init(
   db_message_filter_ = new DBMessageFilter();
   AddFilter(db_message_filter_.get());
 
-  thread_safe_associated_interface_ptr_provider_ =
-      base::MakeUnique<ThreadSafeAssociatedInterfacePtrProvider>(channel());
-  thread_safe_render_message_filter_ =
-      thread_safe_associated_interface_ptr_provider_
-          ->CreateInterfacePtr<mojom::RenderMessageFilter>();
-
   vc_manager_.reset(new VideoCaptureImplManager());
 
   browser_plugin_manager_.reset(new BrowserPluginManager());