Move image_decoder.cc/.h from webkit\glue to content\child.

content/child/image_decoder.h

Index: content/child/image_decoder.h
===================================================================
--- content/child/image_decoder.h	(revision 208237)
+++ content/child/image_decoder.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2013 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.
 
@@ -6,18 +6,17 @@
 
 #include "base/basictypes.h"
 #include "ui/gfx/size.h"
-#include "webkit/glue/webkit_glue_export.h"
 
 class SkBitmap;
 
-namespace webkit_glue {
+namespace content {
 
 // Provides an interface to WebKit's image decoders.
 //
 // Note to future: This class should be deleted. We should have our own nice
 // image decoders in base/gfx, and our port should use those. Currently, it's
 // the other way around.
-class WEBKIT_GLUE_EXPORT ImageDecoder {
+class ImageDecoder {
  public:
   // Use the constructor with desired_size when you think you may have an .ico
   // format and care about which size you get back. Otherwise, use the 0-arg
@@ -42,4 +41,4 @@
   DISALLOW_COPY_AND_ASSIGN(ImageDecoder);
 };
 
-}  // namespace webkit_glue
+}  // namespace content