Revert "Upload GdkPixbufs into cairo surfaces so they (hopefully) live on the X

chrome/browser/browser_theme_provider.h

Index: chrome/browser/browser_theme_provider.h
diff --git a/chrome/browser/browser_theme_provider.h b/chrome/browser/browser_theme_provider.h
index 7532f97f4e868b5cd9e70b0bffe01b999653f9d5..0053ef2cdb9a74caf9d31a09ee24717aeffe6e8e 100644
--- a/chrome/browser/browser_theme_provider.h
+++ b/chrome/browser/browser_theme_provider.h
@@ -242,10 +242,6 @@ class BrowserThemeProvider : public base::RefCounted<BrowserThemeProvider>,
   // Save the modified bitmap at image_cache_[id].
   virtual void SaveThemeBitmap(const std::string resource_name, int id);
 
-  // Clears the platform-specific caches. Do not call directly; it's called
-  // from ClearCaches().
-  virtual void FreePlatformCaches();
-
   Profile* profile() { return profile_; }
 
   // Subclasses may need us to not use the on-disk image cache. The GTK
@@ -316,6 +312,10 @@ class BrowserThemeProvider : public base::RefCounted<BrowserThemeProvider>,
   // Frees generated images and clears the image cache.
   void ClearCaches();
 
+  // Clears the platform-specific caches. Do not call directly; it's called
+  // from ClearCaches().
+  void FreePlatformCaches();
+
   // Encode image at image_cache_[id] as PNG and write to disk.
   bool WriteImagesToDisk();