cc: Enable renderer compositor impl-side painting on Mac.

content/browser/gpu/compositor_util.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/browser/gpu/compositor_util.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "build/build_config.h"
@@ skipping 177 matching lines @@
 bool IsImplSidePaintingEnabled() {
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   if (command_line.HasSwitch(switches::kDisableImplSidePainting))
     return false;
   else if (command_line.HasSwitch(switches::kEnableImplSidePainting))
     return true;
   else if (command_line.HasSwitch(
       switches::kEnableBleedingEdgeRenderingFastPaths))
     return true;

[piman, 2014/08/25 18:09:38]

nit: Some of those ifs can go away now.
I think we can remove kEnableImplSidePainting altogether too?

[reveman, 2014/08/25 21:18:54]

kEnableImplSidePainting could be removed but I think it's also fine to wait with
this until we remove all non-impl side code and kDisableImplSidePainting.

 
-#if defined(OS_MACOSX)
-  return false;
-#else
   return true;
-#endif
 }
 
 bool IsGpuRasterizationEnabled() {
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   if (!IsImplSidePaintingEnabled())
     return false;
 
   if (command_line.HasSwitch(switches::kDisableGpuRasterization))
@@ skipping 110 matching lines @@
   return problem_list;
 }
 
 base::Value* GetDriverBugWorkarounds() {
   base::ListValue* workaround_list = new base::ListValue();
   GpuDataManagerImpl::GetInstance()->GetDriverBugWorkarounds(workaround_list);
   return workaround_list;
 }
 
 }  // namespace content