Remove the ENABLE_GPU #define and enable_gpu gyp variable

content/common/gpu/gpu_channel.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.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "content/common/gpu/gpu_channel.h"
 
@@ skipping 599 matching lines @@
     int32 surface_id,
     const GPUCreateCommandBufferConfig& init_params,
     int32* route_id) {
   TRACE_EVENT1("gpu",
                "GpuChannel::CreateViewCommandBuffer",
                "surface_id",
                surface_id);
 
   *route_id = MSG_ROUTING_NONE;
 
-#if defined(ENABLE_GPU)
-
   GpuCommandBufferStub* share_group = stubs_.Lookup(init_params.share_group_id);
 
   // Virtualize compositor contexts on OS X to prevent performance regressions
   // when enabling FCM.
   // http://crbug.com/180463
   bool use_virtualized_gl_context = false;
 #if defined(OS_MACOSX)
   use_virtualized_gl_context = true;
 #endif
 
@@ skipping 11 matching lines @@
                                use_virtualized_gl_context,
                                *route_id,
                                surface_id,
                                watchdog_,
                                software_,
                                init_params.active_url));
   if (preempted_flag_.get())
     stub->SetPreemptByFlag(preempted_flag_);
   router_.AddRoute(*route_id, stub.get());
   stubs_.AddWithID(stub.release(), *route_id);
-#endif  // ENABLE_GPU
 }
 
 GpuCommandBufferStub* GpuChannel::LookupCommandBuffer(int32 route_id) {
   return stubs_.Lookup(route_id);
 }
 
 void GpuChannel::CreateImage(
     gfx::PluginWindowHandle window,
     int32 image_id,
     gfx::Size* size) {
@@ skipping 321 matching lines @@
 
 void GpuChannel::AddFilter(IPC::ChannelProxy::MessageFilter* filter) {
   channel_->AddFilter(filter);
 }
 
 void GpuChannel::RemoveFilter(IPC::ChannelProxy::MessageFilter* filter) {
   channel_->RemoveFilter(filter);
 }
 
 }  // namespace content