Add a factory and defines for native Linux surfaces.

ui/gl/gl_surface_egl.h

Index: ui/gl/gl_surface_egl.h
diff --git a/ui/gl/gl_surface_egl.h b/ui/gl/gl_surface_egl.h
index 6440504846c9f55924b2dd4040af8bf68cdaaf89..668ca15d57131f13e4c40ef92bb1f1c2313a3573 100644
--- a/ui/gl/gl_surface_egl.h
+++ b/ui/gl/gl_surface_egl.h
@@ -40,6 +40,7 @@ class GL_EXPORT GLSurfaceEGL : public GLSurface {
   static const char* GetEGLExtensions();
   static bool HasEGLExtension(const char* name);
   static bool IsCreateContextRobustnessSupported();
+  static bool IsSyncControlSupported();
 
  protected:
   virtual ~GLSurfaceEGL();
@@ -58,6 +59,7 @@ class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
   // Implement GLSurface.
   virtual EGLConfig GetConfig() OVERRIDE;
   virtual bool Initialize() OVERRIDE;
+  virtual bool Initialize(VSyncProvider* syncProvider) OVERRIDE;
   virtual void Destroy() OVERRIDE;
   virtual bool Resize(const gfx::Size& size) OVERRIDE;
   virtual bool Recreate() OVERRIDE;
@@ -69,6 +71,7 @@ class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
   virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE;
   virtual VSyncProvider* GetVSyncProvider() OVERRIDE;
 
+
  protected:
   virtual ~NativeViewGLSurfaceEGL();
   void SetHandle(EGLSurface surface);