android_webview: changes to support Android GraphicBuffers

android_webview/common/gpu_memory_buffer_factory_proxy.cc

+// Copyright 2013 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 "android_webview/common/gpu_memory_buffer_factory_proxy.h"
+
+#include "android_webview/common/aw_switches.h"
+#include "base/command_line.h"
+#include "base/logging.h"
+
+namespace android_webview {
+
+gfx::GpuMemoryBuffer::Create* g_pixel_buffer_factory_ = NULL;
+
+const gfx::GpuMemoryBuffer::Create& GetGpuMemoryBufferFactoryProxy() {
+  return *g_pixel_buffer_factory_;
+}
+
+void SetGpuMemoryBufferFactoryProxy(
+    const gfx::GpuMemoryBuffer::Create& factory) {
+  DCHECK(g_pixel_buffer_factory_ == NULL);
+  g_pixel_buffer_factory_ =
+      CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseZeroCopyBuffers)
+      ? new gfx::GpuMemoryBuffer::Create(factory) : NULL;
+}
+
+}  // namespace android_webview