Remove themes/default.dll and merge the resources into chrome.dll.

chrome/browser/browser_main_mac.mm

Index: chrome/browser/browser_main_mac.mm
diff --git a/chrome/browser/browser_main_mac.mm b/chrome/browser/browser_main_mac.mm
index 8ed837f8397f3a8d5f7ec943a8105f554261846a..ce5893b8acc64112363b8d44dbfb366b12dd5b42 100644
--- a/chrome/browser/browser_main_mac.mm
+++ b/chrome/browser/browser_main_mac.mm
@@ -42,9 +42,6 @@ void WillInitializeMainMessageLoop(const MainFunctionParams& parameters) {
   // the strings avaiable for localization.
   if (!parameters.ui_task) {
     ResourceBundle::InitSharedInstance(std::wstring());
-    // We only load the theme resources in the browser process, since this is
-    // the browser process, load them.
-    ResourceBundle::GetSharedInstance().LoadThemeResources();
   }
   // Now load the nib.
   [NSBundle loadNibNamed:@"MainMenu" owner:NSApp];