Move the parsing of "chrome_url_overrides" out of Extension.

chrome/browser/extensions/extension_web_ui.h

Index: chrome/browser/extensions/extension_web_ui.h
diff --git a/chrome/browser/extensions/extension_web_ui.h b/chrome/browser/extensions/extension_web_ui.h
index 99a29e7ecd96e87b5f9127aa6b4299f9c9a1d329..46ce3a6dd4ce01b6b7fae4f98d57d056dea82e4d 100644
--- a/chrome/browser/extensions/extension_web_ui.h
+++ b/chrome/browser/extensions/extension_web_ui.h
@@ -9,7 +9,7 @@
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/favicon/favicon_service.h"
-#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/manifest_url_handler.h"
 #include "content/public/browser/web_ui_controller.h"
 
 namespace content {
@@ -49,9 +49,9 @@ class ExtensionWebUI : public content::WebUIController {
   // Page names are the keys, and chrome-extension: URLs are the values.
   // (e.g. { "newtab": "chrome-extension://<id>/my_new_tab.html" }
   static void RegisterChromeURLOverrides(Profile* profile,
-      const extensions::Extension::URLOverrideMap& overrides);
+      const extensions::URLOverrides::URLOverrideMap& overrides);
   static void UnregisterChromeURLOverrides(Profile* profile,
-      const extensions::Extension::URLOverrideMap& overrides);
+      const extensions::URLOverrides::URLOverrideMap& overrides);
   static void UnregisterChromeURLOverride(const std::string& page,
                                           Profile* profile,
                                           const base::Value* override);