Revert of Add support for compressed GPU memory buffers.

content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.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/client/gpu_memory_buffer_impl_shared_memory.h"
 
 #include "base/bind.h"
 #include "base/numerics/safe_math.h"
 #include "ui/gl/gl_bindings.h"
 
@@ skipping 97 matching lines @@
           handle.id,
           size,
           format,
           callback,
           shared_memory.Pass()));
 }
 
 // static
 bool GpuMemoryBufferImplSharedMemory::IsFormatSupported(Format format) {
   switch (format) {
-    case ATC:
-    case ATCIA:
-    case DXT1:
-    case DXT5:
-    case ETC1:
     case RGBA_8888:
     case BGRA_8888:
       return true;
     case RGBX_8888:
       return false;
   }
 
   NOTREACHED();
   return false;
 }
@@ skipping 18 matching lines @@
 
 gfx::GpuMemoryBufferHandle GpuMemoryBufferImplSharedMemory::GetHandle() const {
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::SHARED_MEMORY_BUFFER;
   handle.id = id_;
   handle.handle = shared_memory_->handle();
   return handle;
 }
 
 }  // namespace content