Sync compositor: Ignore command buffer memory callback

content/browser/android/in_process/synchronous_compositor_context_provider.h

+// Copyright (c) 2015 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.
+
+#ifndef CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_CONTEXT_PROVIDER_H_
+#define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_CONTEXT_PROVIDER_H_
+
+#include "content/common/gpu/client/context_provider_command_buffer.h"
+
+namespace content {
+
+// This class exists purely to ignore memory signals from the command buffer.
+// Synchronous compositor manages memory by itself.
+class SynchronousCompositorContextProvider
+    : public ContextProviderCommandBuffer {
+ public:
+  SynchronousCompositorContextProvider(
+      scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d,
+      CommandBufferContextType type);
+
+  void SetMemoryPolicyChangedCallback(
+      const MemoryPolicyChangedCallback& memory_policy_changed_callback)
+      override;
+
+ private:
+  ~SynchronousCompositorContextProvider() override;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_CONTEXT_PROVIDER_H_