Enable sync allocation of GpuMemoryBuffers from the browser process.

content/common/gpu/client/gpu_memory_buffer_impl_ozone.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
 
+#include "base/bind.h"
 #include "content/common/gpu/client/gpu_memory_buffer_impl_ozone_native_buffer.h"
 #include "content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.h"
 
 namespace content {
 
-// static
-scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImpl::Create(
+namespace {
+
+void AllocatedOzoneNativeBuffer(
     const gfx::Size& size,
     unsigned internalformat,
-    unsigned usage) {
+    const GpuMemoryBufferImpl::CreationCallback& callback,
+    const gfx::GpuMemoryBufferHandle& handle) {
+  callback.Run(
+      GpuMemoryBufferImpl::CreateFromHandle(handle, size, internalformat));
+}

[reveman, 2014/09/09 17:18:26]

As mentioned in the other comment. I think this would be better implemented as a
GpuMemoryBufferImplOzoneNativeBuffer::Create function.

+
+}  // namespace
+
+// static
+void GpuMemoryBufferImpl::Create(const gfx::Size& size,
+                                 unsigned internalformat,
+                                 unsigned usage,
+                                 const CreationCallback& callback) {
+  if (GpuMemoryBufferImplOzoneNativeBuffer::IsConfigurationSupported(
+          internalformat, usage)) {
+    GpuMemoryBufferImplOzoneNativeBuffer::AllocateOzoneNativeBufferForChildId(
+        size,
+        internalformat,
+        usage,
+        0,
+        base::Bind(
+            &AllocatedOzoneNativeBuffer, size, internalformat, callback));
+    return;
+  }
+
   if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
           size, internalformat, usage)) {
     scoped_ptr<GpuMemoryBufferImplSharedMemory> buffer(
         new GpuMemoryBufferImplSharedMemory(size, internalformat));
-    if (!buffer->Initialize())
-      return scoped_ptr<GpuMemoryBufferImpl>();
-
-    return buffer.PassAs<GpuMemoryBufferImpl>();
+    if (buffer->Initialize()) {
+      callback.Run(buffer.PassAs<GpuMemoryBufferImpl>());
+      return;
+    }
   }
 
-  return scoped_ptr<GpuMemoryBufferImpl>();
+  callback.Run(scoped_ptr<GpuMemoryBufferImpl>());
 }
 
 // static
 void GpuMemoryBufferImpl::AllocateForChildProcess(
     const gfx::Size& size,
     unsigned internalformat,
     unsigned usage,
     base::ProcessHandle child_process,
     int child_id,
     const AllocationCallback& callback) {
@@ skipping 41 matching lines @@
         return scoped_ptr<GpuMemoryBufferImpl>();
 
       return buffer.PassAs<GpuMemoryBufferImpl>();
     }
     default:
       return scoped_ptr<GpuMemoryBufferImpl>();
   }
 }
 
 }  // namespace content