On Linux rework driver_version/vendor extraction from gl version

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 d6dcc1e92bc168e3295c2243de1f13f777d22458..37cc1a9c86765e81d8c55d64ef106af4b7952b32 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -756,6 +756,14 @@ int BrowserMainLoop::PreCreateThreads() {
   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);