gpu: Recompute driver bug workarounds on linux

content/gpu/gpu_main.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 <stdlib.h>
 
 #if defined(OS_WIN)
 #include <dwmapi.h>
 #include <windows.h>
 #endif
@@ skipping 274 matching lines @@
       // crash.
       // By skipping the following code on Mac, we don't really lose anything,
       // because the basic GPU information is passed down from browser process
       // and we already registered them through SetGpuInfo() above.
       base::TimeTicks before_collect_context_graphics_info =
           base::TimeTicks::Now();
 #if !defined(OS_MACOSX)
       if (!CollectGraphicsInfo(gpu_info))
         dead_on_arrival = true;
 
-#if defined(OS_CHROMEOS) || defined(OS_ANDROID)
+#if defined(OS_CHROMEOS) || defined(OS_ANDROID) || defined(OS_LINUX)
       // Recompute gpu driver bug workarounds - this is specifically useful
       // on systems where vendor_id/device_id aren't available.

[Ken Russell (switch to Gerrit), 2015/10/22 17:30:32]

Could you please expand this comment? "This is necessary on systems where
vendor_id/device_id aren't available (Chrome OS, Android) or where workarounds
may be dependent on GL_VENDOR and GL_RENDERER strings which are lazily computed
(Linux)."

       if (!command_line.HasSwitch(switches::kDisableGpuDriverBugWorkarounds)) {
         gpu::ApplyGpuDriverBugWorkarounds(
             gpu_info, const_cast<base::CommandLine*>(&command_line));
       }
 #endif
 
 #if defined(OS_LINUX)
       initialized_gl_context = true;
 #if !defined(OS_CHROMEOS)
       if (gpu_info.gpu.vendor_id == 0x10de &&  // NVIDIA
@@ skipping 251 matching lines @@
     return true;
   }
 
   return false;
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace.
 
 }  // namespace content