Implement GLX for Ozone X11.

ui/ozone/platform/x11/ozone_platform_x11.cc

Index: ui/ozone/platform/x11/ozone_platform_x11.cc
diff --git a/ui/ozone/platform/x11/ozone_platform_x11.cc b/ui/ozone/platform/x11/ozone_platform_x11.cc
index cfaf098a2c2137525ee6e2f3e8abff9c77c155dd..eca7a3348e7e97cf97fe74d45a012356b8d48189 100644
--- a/ui/ozone/platform/x11/ozone_platform_x11.cc
+++ b/ui/ozone/platform/x11/ozone_platform_x11.cc
@@ -89,6 +89,7 @@ class OzonePlatformX11 : public OzonePlatform {
   }
 
   void InitializeGPU() override {
+    event_source_.reset(new X11EventSourceLibevent(gfx::GetXDisplay()));
     surface_factory_ozone_.reset(new X11SurfaceFactory());
     gpu_platform_support_.reset(CreateStubGpuPlatformSupport());
   }
@@ -96,7 +97,6 @@ class OzonePlatformX11 : public OzonePlatform {
  private:
   // Objects in the Browser process.
   scoped_ptr<X11WindowManagerOzone> window_manager_;
-  scoped_ptr<X11EventSourceLibevent> event_source_;
   scoped_ptr<OverlayManagerOzone> overlay_manager_;
   scoped_ptr<InputController> input_controller_;
   scoped_ptr<X11CursorFactoryOzone> cursor_factory_ozone_;
@@ -106,6 +106,7 @@ class OzonePlatformX11 : public OzonePlatform {
   scoped_ptr<GpuPlatformSupport> gpu_platform_support_;
 
   // Objects in both Browser and GPU process.
+  scoped_ptr<X11EventSourceLibevent> event_source_;
   scoped_ptr<X11SurfaceFactory> surface_factory_ozone_;
 
   DISALLOW_COPY_AND_ASSIGN(OzonePlatformX11);