Remove parts of //cc we aren't using

cc/resources/ui_resource_client.h

-// 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.
-
-#ifndef CC_RESOURCES_UI_RESOURCE_CLIENT_H_
-#define CC_RESOURCES_UI_RESOURCE_CLIENT_H_
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "cc/base/cc_export.h"
-
-namespace cc {
-
-class UIResourceBitmap;
-
-typedef int UIResourceId;
-
-class CC_EXPORT UIResourceClient {
- public:
-  // GetBitmap() will be called once soon after resource creation and then will
-  // be called afterwards whenever the GL context is lost, on the same thread
-  // that LayerTreeHost::CreateUIResource was called on.  It is only safe to
-  // delete a UIResourceClient object after DeleteUIResource has been called for
-  // all IDs associated with it.  A valid bitmap always must be returned but it
-  // doesn't need to be the same size or format as the original.
-  virtual UIResourceBitmap GetBitmap(UIResourceId uid,
-                                     bool resource_lost) = 0;
-  virtual ~UIResourceClient() {}
-};
-
-}  // namespace cc
-
-#endif  // CC_RESOURCES_UI_RESOURCE_CLIENT_H_