Add VAVDA, the VAAPI Video Decode Accelerator for Intel CPUs.

ui/gfx/gl/gl_context_glx.h

Index: ui/gfx/gl/gl_context_glx.h
diff --git a/ui/gfx/gl/gl_context_glx.h b/ui/gfx/gl/gl_context_glx.h
index 7479eeec54cc1f2a65a85eda1a128c8a93886a7d..83bcd5ab1cb59459ea6dc01ba4ed440ae640dcaf 100644
--- a/ui/gfx/gl/gl_context_glx.h
+++ b/ui/gfx/gl/gl_context_glx.h
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#ifndef UI_GFX_GL_GL_CONTEXT_GLX_H_
+#define UI_GFX_GL_GL_CONTEXT_GLX_H_
 #include <string>
 
 #include "base/compiler_specific.h"
@@ -26,6 +28,7 @@ class GLContextGLX : public GLContext {
   virtual void ReleaseCurrent(GLSurface* surface) OVERRIDE;
   virtual bool IsCurrent(GLSurface* surface) OVERRIDE;
   virtual void* GetHandle() OVERRIDE;
+  virtual Display* GetDisplay() OVERRIDE;
   virtual void SetSwapInterval(int interval) OVERRIDE;
   virtual std::string GetExtensions() OVERRIDE;
   virtual bool WasAllocatedUsingARBRobustness() OVERRIDE;
@@ -38,3 +41,5 @@ class GLContextGLX : public GLContext {
 };
 
 }  // namespace gfx
+
+#endif //UI_GFX_GL_GL_CONTEXT_GLX_H_