[Offline pages] Refactor URL conversions from TabAndroid

chrome/browser/android/offline_pages/offline_page_bridge.h

Index: chrome/browser/android/offline_pages/offline_page_bridge.h
diff --git a/chrome/browser/android/offline_pages/offline_page_bridge.h b/chrome/browser/android/offline_pages/offline_page_bridge.h
index cf53187b548ade7284d74b33febf88e5d56c39ac..a141e552441f2922928e3caf157f9039e276d916 100644
--- a/chrome/browser/android/offline_pages/offline_page_bridge.h
+++ b/chrome/browser/android/offline_pages/offline_page_bridge.h
@@ -22,9 +22,6 @@ namespace android {
  */
 class OfflinePageBridge : public OfflinePageModel::Observer {
  public:
-  // Returns true if |url| might points to an offline page.
-  static bool MightBeOfflineURL(const GURL& url);
-
   OfflinePageBridge(JNIEnv* env,
                     jobject obj,
                     content::BrowserContext* browser_context);