Plumb GpuMemoryBuffer allocation to GPU process.

content/browser/gpu/browser_gpu_channel_host_factory.cc

 // Copyright (c) 2012 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/browser/gpu/browser_gpu_channel_host_factory.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 451 matching lines @@
                                        target_task_runner);
   filter->AddRoute(MSG_ROUTING_CONTROL, handler);
 
   GetIOLoopProxy()->PostTask(
       FROM_HERE,
       base::Bind(&BrowserGpuChannelHostFactory::AddFilterOnIO,
                  gpu_host_id_,
                  filter));
 }
 
+void BrowserGpuChannelHostFactory::AllocateGpuMemoryBufferAsync(
+    const gfx::GpuMemoryBufferParams& params,
+    const AllocateGpuMemoryBufferCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  GetIOLoopProxy()->PostTask(
+      FROM_HERE,
+      base::Bind(
+          &BrowserGpuChannelHostFactory::AllocateGpuMemoryBufferAsyncOnIO,
+          base::Unretained(this),
+          params,
+          callback));
+}
+
+void BrowserGpuChannelHostFactory::AllocateGpuMemoryBufferAsyncOnIO(
+    const gfx::GpuMemoryBufferParams& params,
+    const AllocateGpuMemoryBufferCallback& callback) {
+  GpuProcessHost* host = GpuProcessHost::FromID(gpu_host_id_);
+  if (!host) {
+    GpuMemoryBufferAllocatedAsyncOnIO(callback, gfx::GpuMemoryBufferHandle());
+    return;
+  }
+
+  host->AllocateGpuMemoryBuffer(
+      params,
+      base::Bind(
+          &BrowserGpuChannelHostFactory::GpuMemoryBufferAllocatedAsyncOnIO,
+          callback));
+}
+
+// static
+void BrowserGpuChannelHostFactory::GpuMemoryBufferAllocatedAsyncOnIO(
+    const AllocateGpuMemoryBufferCallback& callback,
+    const gfx::GpuMemoryBufferHandle& handle) {
+  BrowserThread::PostTask(
+      BrowserThread::UI,
+      FROM_HERE,
+      base::Bind(&BrowserGpuChannelHostFactory::GpuMemoryBufferAllocatedAsync,
+                 callback,
+                 handle));
+}
+
+// static
+void BrowserGpuChannelHostFactory::GpuMemoryBufferAllocatedAsync(
+    const AllocateGpuMemoryBufferCallback& callback,
+    const gfx::GpuMemoryBufferHandle& handle) {
+  callback.Run(handle);
+}
+
 }  // namespace content