Move GrGLExtensions from GrGLContextInfo to GrGLInterface

src/gpu/gl/GrGLContext.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLContext_DEFINED
 #define GrGLContext_DEFINED
@@ skipping 40 matching lines @@
     GrGLVendor vendor() const { return fVendor; }
     GrGLRenderer renderer() const { return fRenderer; }
     /** Is this a mesa-based driver. Does not mean it is the osmesa software rasterizer. */
     bool isMesa() const { return fIsMesa; }
     /** Are we running inside Chromium (using the command buffer)? We make some different tradeoffs
         about what errors to check for because queries are synchronous. We should probably expose
         this as an option for clients other than Chromium. */
     bool isChromium() const { return fIsChromium; }
     const GrGLCaps* caps() const { return fGLCaps.get(); }
     GrGLCaps* caps() { return fGLCaps; }
-    const GrGLExtensions& extensions() const { return fExtensions; }
-
-    /**
-     * Shortcut for extensions().has(ext)
-     */
     bool hasExtension(const char* ext) const {
         if (!this->isInitialized()) {
             return false;
         }
-        return fExtensions.has(ext);
+        return fInterface->hasExtension(ext);
     }
 
     /**
      * Reset the information
      */
     void reset();
 
 protected:
     SkAutoTUnref<const GrGLInterface>   fInterface;
     GrGLVersion                         fGLVersion;
     GrGLSLGeneration                    fGLSLGeneration;
     GrGLVendor                          fVendor;
     GrGLRenderer                        fRenderer;
-    GrGLExtensions                      fExtensions;
     bool                                fIsMesa;
     bool                                fIsChromium;
     SkAutoTUnref<GrGLCaps>              fGLCaps;
 };
 
 /**
  * Extension of GrGLContextInfo that also provides access to GrGLInterface.
  */
 class GrGLContext : public GrGLContextInfo {
 public:
@@ skipping 12 matching lines @@
         return *this;
     }
 
     const GrGLInterface* interface() const { return fInterface.get(); }
 
 private:
     typedef GrGLContextInfo INHERITED;
 };
 
 #endif