Remove unused and unimplemented abstract functions from GrRenderTarget

src/gpu/gl/GrGLRenderTarget.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLRenderTarget_DEFINED
 #define GrGLRenderTarget_DEFINED
@@ skipping 24 matching lines @@
 
     // The following two functions return the same ID when a
     // texture/render target is multisampled, and different IDs when
     // it is.
     // FBO ID used to render into
     GrGLuint renderFBOID() const { return fRTFBOID; }
     // FBO ID that has texture ID attached.
     GrGLuint textureFBOID() const { return fTexFBOID; }
 
     // override of GrRenderTarget
-    GrBackendObject getRenderTargetHandle() const SK_OVERRIDE { return this->renderFBOID(); }
-    GrBackendObject getRenderTargetResolvedHandle() const SK_OVERRIDE { return this->textureFBOID(); }
     ResolveType getResolveType() const SK_OVERRIDE {
         if (!this->isMultisampled() ||
             fRTFBOID == fTexFBOID) {
             // catches FBO 0 and non MSAA case
             return kAutoResolves_ResolveType;
         } else if (kUnresolvableFBOID == fTexFBOID) {
             return kCantResolve_ResolveType;
         } else {
             return kCanResolve_ResolveType;
         }
@@ skipping 30 matching lines @@
 
     // onGpuMemorySize() needs to know what how many color values are owned per pixel. However,
     // abandon and release zero out the IDs and the cache needs to know the size even after those
     // actions.
     uint8_t fColorValuesPerPixel;
 
     typedef GrRenderTarget INHERITED;
 };
 
 #endif