mac content shell drt: Do not force the mesa gl implementation.

content/shell/shell_main_delegate.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/shell/shell_main_delegate.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
@@ skipping 79 matching lines @@
 bool ShellMainDelegate::BasicStartupComplete(int* exit_code) {
 #if defined(OS_WIN)
   // Enable trace control and transport through event tracing for Windows.
   logging::LogEventProvider::Initialize(kContentShellProviderName);
 #endif
 
   InitLogging();
   CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kDumpRenderTree)) {
     command_line.AppendSwitch(switches::kAllowFileAccessFromFiles);
+#if !defined(OS_MACOSX)
     command_line.AppendSwitchASCII(
         switches::kUseGL, gfx::kGLImplementationOSMesaName);

[Nico, 2013/02/20 16:05:52]

If you remember why you added this, I can add a comment.

[zmo, 2013/02/26 20:35:18]

OSMesa support on Mac is incomplete, that's why we don't use it on Mac.

+#endif
     command_line.AppendSwitch(switches::kIgnoreGpuBlacklist);
     command_line.AppendSwitch(switches::kEnableExperimentalWebKitFeatures);
     command_line.AppendSwitch(switches::kEnableCssShaders);
     if (command_line.HasSwitch(switches::kEnableSoftwareCompositing))
       command_line.AppendSwitch(switches::kEnableSoftwareCompositingGLAdapter);
 
     net::CookieMonster::EnableFileScheme();
     if (!WebKitTestPlatformInitialize()) {
       if (exit_code)
         *exit_code = 1;
@@ skipping 69 matching lines @@
   browser_client_.reset(new ShellContentBrowserClient);
   return browser_client_.get();
 }
 
 ContentRendererClient* ShellMainDelegate::CreateContentRendererClient() {
   renderer_client_.reset(new ShellContentRendererClient);
   return renderer_client_.get();
 }
 
 }  // namespace content