Expose array of bitmaps contained by gfx::Image similar to NSImage

ui/gfx/image/image.cc

Index: ui/gfx/image/image.cc
diff --git a/ui/gfx/image/image.cc b/ui/gfx/image/image.cc
index afce7d8bdedc0a95869600fa9568c993b943bca4..38df8d163cae053acbf213bdc1c7ecbfeed0ca38 100644
--- a/ui/gfx/image/image.cc
+++ b/ui/gfx/image/image.cc
@@ -7,8 +7,9 @@
 #include <algorithm>
 
 #include "base/logging.h"
-#include "base/stl_util.h"
+#include "base/memory/scoped_ptr.h"
 #include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/size.h"
 
 #if defined(TOOLKIT_GTK)
@@ -96,31 +97,18 @@ class ImageRep {
 
 class ImageRepSkia : public ImageRep {
  public:
-  explicit ImageRepSkia(const SkBitmap* bitmap)
-      : ImageRep(Image::kImageRepSkia) {
-    CHECK(bitmap);
-    // TODO(rohitrao): Add a CHECK to ensure that !bitmap->isNull().
-    bitmaps_.push_back(bitmap);
-  }
-
-  explicit ImageRepSkia(const std::vector<const SkBitmap*>& bitmaps)
+  explicit ImageRepSkia(ImageSkia* image)
       : ImageRep(Image::kImageRepSkia),
-        bitmaps_(bitmaps) {
-    CHECK(!bitmaps_.empty());
-    // TODO(rohitrao): Add a CHECK to ensure that !bitmap->isNull() for each
-    // vector element.
+        image_(image) {
   }
 
   virtual ~ImageRepSkia() {
-    STLDeleteElements(&bitmaps_);
   }
 
-  const SkBitmap* bitmap() const { return bitmaps_[0]; }
-
-  const std::vector<const SkBitmap*>& bitmaps() const { return bitmaps_; }
+  ImageSkia* image() { return image_.get(); }
 
  private:
-  std::vector<const SkBitmap*> bitmaps_;
+  scoped_ptr<ImageSkia> image_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageRepSkia);
 };
@@ -238,20 +226,22 @@ Image::Image() {
 
 Image::Image(const SkBitmap* bitmap)
     : storage_(new internal::ImageStorage(Image::kImageRepSkia)) {
-  internal::ImageRepSkia* rep = new internal::ImageRepSkia(bitmap);
+  internal::ImageRepSkia* rep = new internal::ImageRepSkia(
+      new ImageSkia(bitmap));
   AddRepresentation(rep);
 }
 
 Image::Image(const SkBitmap& bitmap)
     : storage_(new internal::ImageStorage(Image::kImageRepSkia)) {
   internal::ImageRepSkia* rep =
-      new internal::ImageRepSkia(new SkBitmap(bitmap));
+      new internal::ImageRepSkia(new ImageSkia(new SkBitmap(bitmap)));
   AddRepresentation(rep);
 }
 
 Image::Image(const std::vector<const SkBitmap*>& bitmaps)
     : storage_(new internal::ImageStorage(Image::kImageRepSkia)) {
-  internal::ImageRepSkia* rep = new internal::ImageRepSkia(bitmaps);
+  internal::ImageRepSkia* rep = new internal::ImageRepSkia(
+    new ImageSkia(bitmaps));
   AddRepresentation(rep);
 }
 
@@ -284,7 +274,12 @@ Image::~Image() {
 
 const SkBitmap* Image::ToSkBitmap() const {
   internal::ImageRep* rep = GetRepresentation(Image::kImageRepSkia);
-  return rep->AsImageRepSkia()->bitmap();
+  return rep->AsImageRepSkia()->image()->bitmap();
+}
+
+const ImageSkia* Image::ToImageSkia() const {
+  internal::ImageRep* rep = GetRepresentation(Image::kImageRepSkia);
+  return rep->AsImageRepSkia()->image();
 }
 
 #if defined(TOOLKIT_GTK)
@@ -447,14 +442,4 @@ void Image::AddRepresentation(internal::ImageRep* rep) const {
   storage_->representations().insert(std::make_pair(rep->type(), rep));
 }
 
-size_t Image::GetNumberOfSkBitmaps() const  {
-  return GetRepresentation(Image::kImageRepSkia)->AsImageRepSkia()->
-      bitmaps().size();
-}
-
-const SkBitmap* Image::GetSkBitmapAtIndex(size_t index) const {
-  return GetRepresentation(Image::kImageRepSkia)->AsImageRepSkia()->
-      bitmaps()[index];
-}
-
 }  // namespace gfx