Connect up --disable-gl-multisampling to command buffer

content/browser/gpu_process_host.cc

 // Copyright (c) 2010 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/browser/gpu_process_host.h"
 
@@ skipping 279 matching lines @@
     switches::kDisableLogging,
     switches::kEnableAcceleratedDecoding,
     switches::kEnableLogging,
 #if defined(OS_MACOSX)
     switches::kEnableSandboxLogging,
 #endif
     switches::kGpuStartupDialog,
     switches::kLoggingLevel,
     switches::kNoGpuSandbox,
     switches::kNoSandbox,
+    switches::kDisableGLMultisampling,
   };

[zmo, 2011/03/07 23:34:29]

After copy switches from browser commandline, you need to append
kDisableGLMultisampling switch even it's not passed into browser, if
GpuDataManager::GpuFeatureAllowed(GpuFeatureFlags::kGpuFeatureMultisampling) is
false.

[jbauman, 2011/03/08 19:59:18]

Good point, although that's rather tricky because we're on the wrong thread to
access that info. I'll see what I can do.

   cmd_line->CopySwitchesFrom(browser_command_line, kSwitchNames,
                              arraysize(kSwitchNames));
 
   // If specified, prepend a launcher program to the command line.
   if (!gpu_launcher.empty())
     cmd_line->PrependWrapper(gpu_launcher);
 
   Launch(
 #if defined(OS_WIN)
       FilePath(),
 #elif defined(OS_POSIX)
       false,  // Never use the zygote (GPU plugin can't be sandboxed).
       base::environment_vector(),
 #endif
       cmd_line);
 
   UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessLifetimeEvents",
                             LAUNCHED, GPU_PROCESS_LIFETIME_EVENT_MAX);
   return true;
 }