Replacing allocate bitmap IPC messages with a new Mojo interface.

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index ba63945eeb29b13d2d8344f7be2a404fe2520c91..072b4da73a0424072d99978cab755226de4d2703 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -112,6 +112,7 @@
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_helper.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
+#include "content/browser/renderer_host/shared_memory_allocator_impl.h"
 #include "content/browser/renderer_host/text_input_client_message_filter.h"
 #include "content/browser/resolve_proxy_msg_helper.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
@@ -1273,6 +1274,8 @@ void RenderProcessHostImpl::RegisterMojoInterfaces() {
       base::Bind(&VideoCaptureHost::Create,
                  BrowserMainLoop::GetInstance()->media_stream_manager()));
 
+  registry->AddInterface(base::Bind(&SharedMemoryAllocatorImpl::Create));
+
   // This is to support usage of WebSockets in cases in which there is no
   // associated RenderFrame (e.g., Shared Workers).
   AddUIThreadInterface(