Enable GLX/EGL backend switching while run HW video decode with libva.

content/common/gpu/media/vaapi_video_decode_accelerator.h

Index: content/common/gpu/media/vaapi_video_decode_accelerator.h
diff --git a/content/common/gpu/media/vaapi_video_decode_accelerator.h b/content/common/gpu/media/vaapi_video_decode_accelerator.h
index 1755b98f3d5e37749b36bd36ee5f2b84644c118d..332ea9bd1aa2646774a9da0876c74c7d0138dcfa 100644
--- a/content/common/gpu/media/vaapi_video_decode_accelerator.h
+++ b/content/common/gpu/media/vaapi_video_decode_accelerator.h
@@ -45,7 +45,11 @@ class CONTENT_EXPORT VaapiVideoDecodeAccelerator
     : public VideoDecodeAcceleratorImpl {
  public:
   VaapiVideoDecodeAccelerator(
+#if defined(VIDEO_TEXTURE_GLX_BACKEND)
       Display* x_display, GLXContext glx_context,
+#elif defined(VIDEO_TEXTURE_EGL_BACKEND)
+      EGLDisplay egl_display, EGLContext egl_context,
+#endif
       Client* client,
       const base::Callback<bool(void)>& make_context_current);
   virtual ~VaapiVideoDecodeAccelerator();
@@ -117,11 +121,11 @@ private:
 
   // Helper for Destroy(), doing all the actual work except for deleting self.
   void Cleanup();
-
+#if defined(VIDEO_TEXTURE_GLX_BACKEND)
   // Get a usable framebuffer configuration for use in binding textures
   // or return false on failure.
   bool InitializeFBConfig();
-
+#endif
   // Callback for the decoder to execute when it wants us to output given
   // |va_surface|.
   void SurfaceReady(int32 input_id, const scoped_refptr<VASurface>& va_surface);
@@ -153,9 +157,15 @@ private:
 
   // Client-provided X/GLX state.
   Display* x_display_;
+
+#if defined(VIDEO_TEXTURE_GLX_BACKEND)
   GLXContext glx_context_;
-  base::Callback<bool(void)> make_context_current_;
   GLXFBConfig fb_config_;
+#elif defined(VIDEO_TEXTURE_EGL_BACKEND)
+  EGLDisplay egl_display_;
+  EGLContext egl_context_;
+#endif
+  base::Callback<bool(void)> make_context_current_;
 
   // VAVDA state.
   enum State {