Fix GL extension printing on core profiles.

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 31 matching lines @@
      */
     bool initialize(const GrGLInterface* interface);
     bool isInitialized() const;
 
     GrGLBinding binding() const { return fBindingInUse; }
     GrGLVersion version() const { return fGLVersion; }
     GrGLSLGeneration glslGeneration() const { return fGLSLGeneration; }
     GrGLVendor vendor() const { return fVendor; }
     const GrGLCaps* caps() const { return fGLCaps.get(); }
     GrGLCaps* caps() { return fGLCaps; }
+    const GrGLExtensions& extensions() const { return fExtensions; }
 
     /**
-     * Checks for extension support using a cached copy of the GL_EXTENSIONS
-     * string.
+     * Shortcut for extensions().has(ext);
      */
     bool hasExtension(const char* ext) const {
         if (!this->isInitialized()) {
             return false;
         }
         return fExtensions.has(ext);
     }
 
     /**
      * Reset the information
@@ skipping 51 matching lines @@
     GrGLContextInfo& info() { return fInfo; }
 
 private:
     void reset();
 
     const GrGLInterface* fInterface;
     GrGLContextInfo      fInfo;
 };
 
 #endif