DevTools: allow storing devtools preferences on the browser side.

content/shell/browser/webkit_test_controller.h

Index: content/shell/browser/webkit_test_controller.h
diff --git a/content/shell/browser/webkit_test_controller.h b/content/shell/browser/webkit_test_controller.h
index 1680c67c14ca8584bb93bec9aa700db17f8ba8c1..2af9d21b7c1d1c36e16bd1baf9ac6a632fac2294 100644
--- a/content/shell/browser/webkit_test_controller.h
+++ b/content/shell/browser/webkit_test_controller.h
@@ -168,7 +168,7 @@ class WebKitTestController : public base::NonThreadSafe,
   void OnOverridePreferences(const WebPreferences& prefs);
   void OnTestFinished();
   void OnClearDevToolsLocalStorage();
-  void OnShowDevTools(const std::string& settings,
+  void OnShowDevTools(const std::string& test_path,
                       const std::string& frontend_url);
   void OnCloseDevTools();
   void OnGoToOffset(int offset);