Allow WebExternalTextureLayers to receive a bitmap along with a mailbox

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 76b40409cb00d860b1f36b8d0031f21435336be1..8c6c8b0bef44e6b368df355e9ebb80a0592917bb 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -106,6 +106,7 @@
 #include "webkit/glue/webkit_glue.h"
 #include "webkit/child/worker_task_runner.h"
 #include "webkit/renderer/appcache/appcache_frontend_impl.h"
+#include "webkit/renderer/compositor_bindings/web_external_bitmap_impl.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
@@ -217,6 +218,10 @@ void AddHistogramSample(void* hist, int sample) {
   histogram->Add(sample);
 }
 
+scoped_ptr<base::SharedMemory> AllocateSharedMemoryFunction(size_t size) {
+  return RenderThreadImpl::Get()->HostAllocateSharedMemoryBuffer(size);
+}
+
 }  // namespace
 
 class RenderThreadImpl::GpuVDAContextLostCallback
@@ -728,6 +733,8 @@ void RenderThreadImpl::EnsureWebKitInitialized() {
 
   if (GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden())
     ScheduleIdleHandler(kLongIdleHandlerDelayMs);
+
+  webkit::SetSharedMemoryAllocationFunction(AllocateSharedMemoryFunction);
 }
 
 void RenderThreadImpl::RegisterSchemes() {