X11: Use better visuals for OpenGL

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index 1653f807f9e31fae43e845026731c9dd72933754..fc2e4a4c2da221582204fe86ddb2ad24c3b53ea2 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -184,7 +184,6 @@
 #include "gpu/config/gpu_driver_bug_workaround_type.h"
 #include "ui/base/x/x11_util_internal.h"  // nogncheck
 #include "ui/gfx/x/x11_connection.h"  // nogncheck
-#include "ui/gfx/x/x11_switches.h"  // nogncheck
 #include "ui/gfx/x/x11_types.h"  // nogncheck
 #endif
 
@@ -748,30 +747,6 @@ int BrowserMainLoop::PreCreateThreads() {
   // 2) Must be after parts_->PreCreateThreads to pick up chrome://flags.
   GpuDataManagerImpl::GetInstance()->Initialize();
 
-#if defined(USE_X11) && !defined(OS_CHROMEOS)
-  // PreCreateThreads is called before CreateStartupTasks which starts the gpu
-  // process.
-  bool enable_transparent_visuals =
-      !GpuDataManagerImpl::GetInstance()->IsDriverBugWorkaroundActive(
-          gpu::DISABLE_TRANSPARENT_VISUALS);
-
-  // Prevent this flag to be turned off later since it is only used here.
-  if (!enable_transparent_visuals &&
-      !GpuDataManagerImpl::GetInstance()->IsCompleteGpuInfoAvailable()) {
-    base::CommandLine::ForCurrentProcess()->AppendSwitch(
-        "disable_transparent_visuals");
-  }
-
-  Visual* visual = NULL;
-  int depth = 0;
-  ui::ChooseVisualForWindow(enable_transparent_visuals, &visual, &depth);
-  DCHECK(depth > 0);
-  base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
-      switches::kWindowDepth, base::IntToString(depth));
-  base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
-      switches::kX11VisualID, base::UintToString(visual->visualid));
-#endif
-
 #if !defined(GOOGLE_CHROME_BUILD) || defined(OS_ANDROID)
   // Single-process is an unsupported and not fully tested mode, so
   // don't enable it for official Chrome builds (except on Android).