Revert of Add support for compressed GPU memory buffers.

content/common/gpu/gpu_memory_buffer_factory_io_surface.cc

 // Copyright 2014 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 "content/common/gpu/gpu_memory_buffer_factory_io_surface.h"
 
 #include <CoreFoundation/CoreFoundation.h>
 
 #include "base/logging.h"
 #include "ui/gl/gl_image_io_surface.h"
@@ skipping 13 matching lines @@
                      int32 value) {
   base::ScopedCFTypeRef<CFNumberRef> number(
       CFNumberCreate(NULL, kCFNumberSInt32Type, &value));
   CFDictionaryAddValue(dictionary, key, number.get());
 }
 
 int32 BytesPerPixel(gfx::GpuMemoryBuffer::Format format) {
   switch (format) {
     case gfx::GpuMemoryBuffer::BGRA_8888:
       return 4;
-    case gfx::GpuMemoryBuffer::ATC:
-    case gfx::GpuMemoryBuffer::ATCIA:
-    case gfx::GpuMemoryBuffer::DXT1:
-    case gfx::GpuMemoryBuffer::DXT5:
-    case gfx::GpuMemoryBuffer::ETC1:
     case gfx::GpuMemoryBuffer::RGBA_8888:
     case gfx::GpuMemoryBuffer::RGBX_8888:
       NOTREACHED();
       return 0;
   }
 
   NOTREACHED();
   return 0;
 }
 
 int32 PixelFormat(gfx::GpuMemoryBuffer::Format format) {
   switch (format) {
     case gfx::GpuMemoryBuffer::BGRA_8888:
       return 'BGRA';
-    case gfx::GpuMemoryBuffer::ATC:
-    case gfx::GpuMemoryBuffer::ATCIA:
-    case gfx::GpuMemoryBuffer::DXT1:
-    case gfx::GpuMemoryBuffer::DXT5:
-    case gfx::GpuMemoryBuffer::ETC1:
     case gfx::GpuMemoryBuffer::RGBA_8888:
     case gfx::GpuMemoryBuffer::RGBX_8888:
       NOTREACHED();
       return 0;
   }
 
   NOTREACHED();
   return 0;
 }
 
@@ skipping 99 matching lines @@
     return scoped_refptr<gfx::GLImage>();
 
   scoped_refptr<gfx::GLImageIOSurface> image(new gfx::GLImageIOSurface(size));
   if (!image->Initialize(it->second.get()))
     return scoped_refptr<gfx::GLImage>();
 
   return image;
 }
 
 }  // namespace content