Inject GPUDataManager support into ash to abstract a content dependency.

ash/gpu_support.h

Index: ash/gpu_support.h
diff --git a/ash/gpu_support.h b/ash/gpu_support.h
new file mode 100644
index 0000000000000000000000000000000000000000..089f121e2f10ef7d069ccf74309f9488b05be9f0
--- /dev/null
+++ b/ash/gpu_support.h
@@ -0,0 +1,34 @@
+// 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.
+
+#ifndef ASH_GPU_SUPPORT_H_
+#define ASH_GPU_SUPPORT_H_
+
+#include <list>
+
+#include "base/callback_forward.h"
+#include "base/process/process.h"
+
+namespace ash {
+
+// An interface to allow use of content::GpuDataManager to be injected in
+// configurations that permit a dependency on content.
+class GPUSupport {
+ public:
+  typedef base::Callback<void(const std::list<base::ProcessHandle>&)>
+      GetGpuProcessHandlesCallback;
+
+  virtual ~GPUSupport() {}
+
+  virtual bool IsPanelFittingDisabled() const = 0;
+
+  virtual void DisableGpuWatchdog() = 0;
+
+  virtual void GetGpuProcessHandles(
+      const GetGpuProcessHandlesCallback& callback) const = 0;
+};
+
+}  // namespace ash
+
+#endif  // ASH_GPU_SUPPORT_H_