Removed implementation of CHROMIUM_subscribe_uniform

gpu/command_buffer/service/gpu_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gpu_switches.h"
 
 #include "base/macros.h"
 
 namespace switches {
 
@@ skipping 36 matching lines @@
 // Sets the maximum size of the in-memory gpu program cache, in kb
 const char kGpuProgramCacheSizeKb[]         = "gpu-program-cache-size-kb";
 
 // Disables the GPU shader on disk cache.
 const char kDisableGpuShaderDiskCache[]     = "disable-gpu-shader-disk-cache";
 
 // Allows async texture uploads (off main thread) via GL context sharing.
 const char kEnableShareGroupAsyncTextureUpload[] =
     "enable-share-group-async-texture-upload";
 
-// Enable WebGL subscribe uniform extension.
-const char kEnableSubscribeUniformExtension[] =
-    "enable-subscribe-uniform-extension";
-
 // Simulates shared textures when share groups are not available. Not available
 // everywhere.
 const char kEnableThreadedTextureMailboxes[] =
     "enable-threaded-texture-mailboxes";
 
 // Include ANGLE's intermediate representation (AST) output in shader
 // compilation info logs.
 const char kGLShaderIntermOutput[] = "gl-shader-interm-output";
 
 // Emulate ESSL lowp and mediump float precisions by mutating the shaders to
 // round intermediate values in ANGLE.
 const char kEmulateShaderPrecision[] = "emulate-shader-precision";
 
 }  // namespace switches