Remove the ENABLE_GPU #define and enable_gpu gyp variable

content/common/gpu/gpu_memory_manager_client.cc

 // 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.
 
 #include "content/common/gpu/gpu_memory_manager_client.h"
 
-#if defined(ENABLE_GPU)
-
 #include "content/common/gpu/gpu_memory_manager.h"
 
 namespace content {
 
 GpuMemoryManagerClientState::GpuMemoryManagerClientState(
     GpuMemoryManager* memory_manager,
     GpuMemoryManagerClient* client,
     GpuMemoryTrackingGroup* tracking_group,
     bool has_surface,
     bool visible)
@@ skipping 21 matching lines @@
 void GpuMemoryManagerClientState::SetVisible(bool visible) {
   memory_manager_->SetClientStateVisible(this, visible);
 }
 
 void GpuMemoryManagerClientState::SetManagedMemoryStats(
     const GpuManagedMemoryStats& stats) {
   memory_manager_->SetClientStateManagedMemoryStats(this, stats);
 }
 
 }  // namespace content
-
-#endif