Enable sync allocation of GpuMemoryBuffers from the browser process.

content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc

Index: content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc b/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc
index fe2681bf051df7b4e5efe3aef6b7db461204fe2e..f471333b1d041dd9de92e492d07ae3c55b819947 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.cc
@@ -46,6 +46,31 @@ void GpuMemoryBufferImplOzoneNativeBuffer::AllocateOzoneNativeBufferForChildId(
 }
 
 // static
+scoped_ptr<GpuMemoryBufferImpl>
+GpuMemoryBufferImplOzoneNativeBuffer::AllocateOzoneNativeBufferForBrowser(
+    const gfx::Size& size,
+    unsigned internalformat,
+    unsigned usage) {
+  gfx::GpuMemoryBufferHandle handle;
+  // +1 ensures we always get non-zero IDs.
+  handle.global_id.primary_id = g_next_buffer_id.GetNext() + 1;
+  handle.global_id.secondary_id = 0;
+  handle.type = gfx::OZONE_NATIVE_BUFFER;
+  handle = GpuMemoryBufferFactoryHost::GetInstance()->CreateGpuMemoryBufferSync(
+      handle, size, internalformat, usage);
+
+  if (handle.type == gfx::EMPTY_BUFFER)
+    return scoped_ptr<GpuMemoryBufferImpl>();
+
+  scoped_ptr<GpuMemoryBufferImplOzoneNativeBuffer> buffer(
+      new GpuMemoryBufferImplOzoneNativeBuffer(size, internalformat));
+  if (!buffer->InitializeFromHandle(handle))
+    return scoped_ptr<GpuMemoryBufferImpl>();
+
+  return buffer.PassAs<GpuMemoryBufferImpl>();
+}
+
+// static
 bool GpuMemoryBufferImplOzoneNativeBuffer::IsFormatSupported(
     unsigned internalformat) {
   switch (internalformat) {