Revert of Move AW renderer compositor context to gpu thread

gpu/command_buffer/service/async_pixel_transfer_manager_linux.cc

 // 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.
 
 #include "gpu/command_buffer/service/async_pixel_transfer_manager.h"
 
 #include "base/command_line.h"
 #include "base/trace_event/trace_event.h"
 #include "gpu/command_buffer/service/async_pixel_transfer_manager_idle.h"
 #include "gpu/command_buffer/service/async_pixel_transfer_manager_share_group.h"
@@ skipping 10 matching lines @@
           switches::kEnableShareGroupAsyncTextureUpload)) {
     DCHECK(context);
     return static_cast<AsyncPixelTransferManager*> (
         new AsyncPixelTransferManagerShareGroup(context));
   }
 
   switch (gfx::GetGLImplementation()) {
     case gfx::kGLImplementationOSMesaGL:
     case gfx::kGLImplementationDesktopGL:
     case gfx::kGLImplementationEGLGLES2:
-      return new AsyncPixelTransferManagerIdle(true);
+      return new AsyncPixelTransferManagerIdle;
     case gfx::kGLImplementationMockGL:
       return new AsyncPixelTransferManagerStub;
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 }  // namespace gpu