Update usages of std::map to use ScopedPtrMap.

ui/gfx/image/image.h

Index: ui/gfx/image/image.h
diff --git a/ui/gfx/image/image.h b/ui/gfx/image/image.h
index 87c80834f711191d515ba4927a8455f015268ee2..d552859dde57d399c201fdf2a02a7f1183be2141 100644
--- a/ui/gfx/image/image.h
+++ b/ui/gfx/image/image.h
@@ -19,10 +19,10 @@
 #ifndef UI_GFX_IMAGE_IMAGE_H_
 #define UI_GFX_IMAGE_IMAGE_H_
 
-#include <map>
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/containers/scoped_ptr_map.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
@@ -59,7 +59,8 @@ class GFX_EXPORT Image {
     kImageRepPNG,
   };
 
-  typedef std::map<RepresentationType, internal::ImageRep*> RepresentationMap;
+  typedef base::ScopedPtrMap<RepresentationType, scoped_ptr<internal::ImageRep>>
+      RepresentationMap;
 
   // Creates an empty image with no representations.
   Image();