Remove WebGLObject maps from WebGLRenderingContextBase and WebGLContextGroup.

third_party/WebKit/Source/modules/webgl/OESTextureHalfFloatLinear.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 16 matching lines @@
 
 namespace blink {
 
 OESTextureHalfFloatLinear::OESTextureHalfFloatLinear(
     WebGLRenderingContextBase* context)
     : WebGLExtension(context) {
   context->extensionsUtil()->ensureExtensionEnabled(
       "GL_OES_texture_half_float_linear");
 }
 
-OESTextureHalfFloatLinear::~OESTextureHalfFloatLinear() {}
-
 WebGLExtensionName OESTextureHalfFloatLinear::name() const {
   return OESTextureHalfFloatLinearName;
 }
 
 OESTextureHalfFloatLinear* OESTextureHalfFloatLinear::create(
     WebGLRenderingContextBase* context) {
   return new OESTextureHalfFloatLinear(context);
 }
 
 bool OESTextureHalfFloatLinear::supported(WebGLRenderingContextBase* context) {
   return context->extensionsUtil()->supportsExtension(
       "GL_OES_texture_half_float_linear");
 }
 
 const char* OESTextureHalfFloatLinear::extensionName() {
   return "OES_texture_half_float_linear";
 }
 
 }  // namespace blink