Disable DRI3 temporarily on Linux desktop.

content/gpu/gpu_main.cc

Index: content/gpu/gpu_main.cc
diff --git a/content/gpu/gpu_main.cc b/content/gpu/gpu_main.cc
index 0430aeeb7e7872f1078ac216cf9df6d2a825a3c6..37606e2b3d888a68e23058245e3101cf96980591 100644
--- a/content/gpu/gpu_main.cc
+++ b/content/gpu/gpu_main.cc
@@ -10,6 +10,7 @@
 #endif
 
 #include "base/debug/trace_event.h"
+#include "base/environment.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
@@ -212,6 +213,16 @@ int GpuMain(const MainFunctionParams& parameters) {
     watchdog_thread->StartWithOptions(options);
   }
 
+  // Temporarily disable DRI3 on desktop Linux.
+  // The GPU process is crashing on DRI3-enabled desktop Linux systems.
+  // TODO(jorgelo): remove this when crbug.com/415681 is fixed.
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+  {
+    scoped_ptr<base::Environment> env(base::Environment::Create());
+    env->SetVar("LIBGL_DRI3_DISABLE", "1");
+  }
+#endif
+
   gpu::GPUInfo gpu_info;
   // Get vendor_id, device_id, driver_version from browser process through
   // commandline switches.