Revert of cc: Added RED_8 to the ResourceFormat enum

cc/resources/resource_provider.cc

 // Copyright 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 "cc/resources/resource_provider.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/containers/hash_tables.h"
@@ skipping 58 matching lines @@
     case RGBA_8888:
       break;
     case BGRA_8888:
       storage_format = GL_BGRA8_EXT;
       break;
     case RGBA_4444:
     case ALPHA_8:
     case LUMINANCE_8:
     case RGB_565:
     case ETC1:
-    case RED_8:
       NOTREACHED();
       break;
   }
 
   return storage_format;
 }
 
 bool IsFormatSupportedForStorage(ResourceFormat format, bool use_bgra) {
   switch (format) {
     case RGBA_8888:
       return true;
     case BGRA_8888:
       return use_bgra;
     case RGBA_4444:
     case ALPHA_8:
     case LUMINANCE_8:
     case RGB_565:
     case ETC1:
-    case RED_8:
       return false;
   }
   return false;
 }
 
 GrPixelConfig ToGrPixelConfig(ResourceFormat format) {
   switch (format) {
     case RGBA_8888:
       return kRGBA_8888_GrPixelConfig;
     case BGRA_8888:
@@ skipping 11 matching lines @@
   switch (format) {
     case RGBA_8888:
       return gfx::GpuMemoryBuffer::Format::RGBA_8888;
     case BGRA_8888:
       return gfx::GpuMemoryBuffer::Format::BGRA_8888;
     case RGBA_4444:
     case ALPHA_8:
     case LUMINANCE_8:
     case RGB_565:
     case ETC1:
-    case RED_8:
       break;
   }
   NOTREACHED();
   return gfx::GpuMemoryBuffer::Format::RGBA_8888;
 }
 
 class ScopedSetActiveTexture {
  public:
   ScopedSetActiveTexture(GLES2Interface* gl, GLenum unit)
       : gl_(gl), unit_(unit) {
@@ skipping 2016 matching lines @@
   ContextProvider* context_provider = output_surface_->context_provider();
   return context_provider ? context_provider->ContextGL() : NULL;
 }
 
 class GrContext* ResourceProvider::GrContext() const {
   ContextProvider* context_provider = output_surface_->context_provider();
   return context_provider ? context_provider->GrContext() : NULL;
 }
 
 }  // namespace cc