Revert of Add support for compressed GPU memory buffers.

content/common/gpu/gpu_command_buffer_stub.cc

Index: content/common/gpu/gpu_command_buffer_stub.cc
diff --git a/content/common/gpu/gpu_command_buffer_stub.cc b/content/common/gpu/gpu_command_buffer_stub.cc
index c108a999454b15af174e6adb857fc7c1e2fe48e5..87f0d051939571a904aafb859d5034271ea25b85 100644
--- a/content/common/gpu/gpu_command_buffer_stub.cc
+++ b/content/common/gpu/gpu_command_buffer_stub.cc
@@ -138,29 +138,6 @@
                      ->gpu_memory_manager()
                      ->GetMaximumClientAllocation());
   return new DevToolsChannelData(res.release());
-}
-
-bool IsSupportedImageFormat(const gpu::Capabilities& capabilities,
-                            gfx::GpuMemoryBuffer::Format format) {
-  switch (format) {
-    case gfx::GpuMemoryBuffer::ATC:
-    case gfx::GpuMemoryBuffer::ATCIA:
-      return capabilities.texture_format_atc;
-    case gfx::GpuMemoryBuffer::BGRA_8888:
-      return capabilities.texture_format_bgra8888;
-    case gfx::GpuMemoryBuffer::DXT1:
-      return capabilities.texture_format_dxt1;
-    case gfx::GpuMemoryBuffer::DXT5:
-      return capabilities.texture_format_dxt5;
-    case gfx::GpuMemoryBuffer::ETC1:
-      return capabilities.texture_format_etc1;
-    case gfx::GpuMemoryBuffer::RGBA_8888:
-    case gfx::GpuMemoryBuffer::RGBX_8888:
-      return true;
-  }
-
-  NOTREACHED();
-  return false;
 }
 
 }  // namespace
@@ -979,11 +956,6 @@
     return;
   }
 
-  if (!IsSupportedImageFormat(decoder_->GetCapabilities(), format)) {
-    LOG(ERROR) << "Image format is not supported.";
-    return;
-  }
-
   scoped_refptr<gfx::GLImage> image = channel()->CreateImageForGpuMemoryBuffer(
       handle, size, format, internalformat);
   if (!image.get())