Add GetImageSkiaNamed to resource_bundle and theme_provider

ui/base/theme_provider.h

Index: ui/base/theme_provider.h
diff --git a/ui/base/theme_provider.h b/ui/base/theme_provider.h
index 82037d7026d11aef2acb150801a752f9f2c12389..4aec13de05facc69c625ac59f8ad92bb06a823ff 100644
--- a/ui/base/theme_provider.h
+++ b/ui/base/theme_provider.h
@@ -31,6 +31,10 @@ namespace base {
 class RefCountedMemory;
 }
 
+namespace gfx {
+class ImageSkia;
+}
+
 namespace ui {
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -48,8 +52,14 @@ class UI_EXPORT ThemeProvider {
 
   // Get the bitmap specified by |id|. An implementation of ThemeProvider should
   // have its own source of ids (e.g. an enum, or external resource bundle).
+  // TODO(pkotwicz): Get rid of GetBitmapNamed once all code uses
+  // GetImageSkiaNamed.
   virtual SkBitmap* GetBitmapNamed(int id) const = 0;
 
+  // Get the image specified by |id|. An implementation of ThemeProvider should
+  // have its own source of ids (e.g. an enum, or external resource bundle).
+  virtual gfx::ImageSkia* GetImageSkiaNamed(int id) const = 0;
+
   // Get the color specified by |id|.
   virtual SkColor GetColor(int id) const = 0;