Remove WebGLObject maps from WebGLRenderingContextBase and WebGLContextGroup.

third_party/WebKit/Source/modules/webgl/WebGLCompressedTextureS3TC.cpp

 /*
  * Copyright (C) 2011 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 20 matching lines @@
 
 WebGLCompressedTextureS3TC::WebGLCompressedTextureS3TC(
     WebGLRenderingContextBase* context)
     : WebGLExtension(context) {
   context->addCompressedTextureFormat(GL_COMPRESSED_RGB_S3TC_DXT1_EXT);
   context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT);
   context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT);
   context->addCompressedTextureFormat(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT);
 }
 
-WebGLCompressedTextureS3TC::~WebGLCompressedTextureS3TC() {}
-
 WebGLExtensionName WebGLCompressedTextureS3TC::name() const {
   return WebGLCompressedTextureS3TCName;
 }
 
 WebGLCompressedTextureS3TC* WebGLCompressedTextureS3TC::create(
     WebGLRenderingContextBase* context) {
   return new WebGLCompressedTextureS3TC(context);
 }
 
 bool WebGLCompressedTextureS3TC::supported(WebGLRenderingContextBase* context) {
   Extensions3DUtil* extensionsUtil = context->extensionsUtil();
   return extensionsUtil->supportsExtension("GL_EXT_texture_compression_s3tc") ||
          (extensionsUtil->supportsExtension(
               "GL_EXT_texture_compression_dxt1") &&
           extensionsUtil->supportsExtension(
               "GL_CHROMIUM_texture_compression_dxt3") &&
           extensionsUtil->supportsExtension(
               "GL_CHROMIUM_texture_compression_dxt5"));
 }
 
 const char* WebGLCompressedTextureS3TC::extensionName() {
   return "WEBGL_compressed_texture_s3tc";
 }
 
 }  // namespace blink