Make the DOMUIThemeSource load and pass through a PNG, rather than relying on...

chrome/browser/browser_theme_provider.h

Index: chrome/browser/browser_theme_provider.h
===================================================================
--- chrome/browser/browser_theme_provider.h	(revision 22426)
+++ chrome/browser/browser_theme_provider.h	(working copy)
@@ -154,6 +154,7 @@
   virtual bool GetDisplayProperty(int id, int* result);
   virtual bool ShouldUseNativeFrame();
   virtual bool HasCustomImage(int id);
+  virtual bool GetRawData(int id, std::vector<unsigned char>* raw_data);
 #if defined(OS_LINUX) && !defined(TOOLKIT_VIEWS)
   virtual GdkPixbuf* GetPixbufNamed(int id);
   virtual GdkPixbuf* GetRTLEnabledPixbufNamed(int id);
@@ -176,6 +177,10 @@
   // locally customized.)
   std::string GetThemeID();
 
+  // Reads the image data from the theme file into the specified vector. Returns
+  // true on success.
+  bool ReadThemeFileData(int id, std::vector<unsigned char>* raw_data);
+
   // Convert a bitfield alignment into a string like "top left". Public so that
   // it can be used to generate CSS values. Takes a bitfield of AlignmentMasks.
   static std::string AlignmentToString(int alignment);
@@ -229,11 +234,8 @@
   typedef std::map<const std::string, SkColor> ColorMap;
   typedef std::map<const std::string, skia::HSL> TintMap;
   typedef std::map<const std::string, int> DisplayPropertyMap;
+  typedef std::map<const int, std::vector<unsigned char> > RawDataMap;
 
-  // Reads the image data from the theme file into the specified vector. Returns
-  // true on success.
-  bool ReadThemeFileData(int id, std::vector<unsigned char>* raw_data);
-
   // Returns the string key for the given tint |id| TINT_* enum value.
   const std::string GetTintKey(int id);
 
@@ -316,6 +318,7 @@
   ImageMap images_;
   ColorMap colors_;
   TintMap tints_;
+  RawDataMap raw_data_;
   DisplayPropertyMap display_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserThemeProvider);