Sync compositor: Ignore command buffer memory callback

content/browser/android/in_process/synchronous_compositor_context_provider.h

Index: content/browser/android/in_process/synchronous_compositor_context_provider.h
diff --git a/content/browser/android/in_process/synchronous_compositor_context_provider.h b/content/browser/android/in_process/synchronous_compositor_context_provider.h
new file mode 100644
index 0000000000000000000000000000000000000000..2251273ba4613e32797e92c055c8b2ae8c7e765d
--- /dev/null
+++ b/content/browser/android/in_process/synchronous_compositor_context_provider.h
@@ -0,0 +1,27 @@
+// 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);
+
+ private:
+  ~SynchronousCompositorContextProvider() override;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_CONTEXT_PROVIDER_H_