Revert of speculative fix for ios

src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gl/SkGLContext.h"
 #import <OpenGLES/EAGL.h>
 
 #define EAGLCTX ((EAGLContext*)(fEAGLContext))
 
 namespace {
 
-class IOSNativeGLContext : public SkGLContext {
+class IOSNativeGLContext : public SkNativeGLContext {
 public:
     IOSNativeGLContext();
 
     virtual ~IOSNativeGLContext();
 
     virtual void makeCurrent() const SK_OVERRIDE;
     virtual void swapBuffers() const SK_OVERRIDE;
 protected:
     virtual const GrGLInterface* createGLContext(GrGLStandard forcedGpuAPI) SK_OVERRIDE;
     virtual void destroyGLContext() SK_OVERRIDE;
@@ skipping 45 matching lines @@
 
 void IOSNativeGLContext::swapBuffers() const { }
 
 } // anonymous namespace
 
 
 SkNativeGLContext* SkCreatePlatformGLContext() {
     return SkNEW(IOSNativeGLContext);
 }