Remove some usage of the ENABLE_GPU macro.

content/common/gpu/gpu_memory_manager.h

 // Copyright (c) 2012 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_COMMON_GPU_GPU_MEMORY_MANAGER_H_
 #define CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_
 
-#if defined(ENABLE_GPU)
-
 #include <list>
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/cancelable_callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/hash_tables.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/gpu_memory_allocation.h"
@@ skipping 207 matching lines @@
   uint32 window_count_;
 
   // Used to disable automatic changes to Manage() in testing.
   bool disable_schedule_manage_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryManager);
 };
 
 }  // namespace content
 
-#endif
-
 #endif // CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_H_