Don't show "Inspect Element" in the context menu if we can't inspect.

chrome/test/testing_browser_process.h

Index: chrome/test/testing_browser_process.h
diff --git a/chrome/test/testing_browser_process.h b/chrome/test/testing_browser_process.h
index 2391a53b3090afa8d641670a89b595743aca111e..b4bc3fc9726ede9ea70394b0d34d801bbb495d57 100644
--- a/chrome/test/testing_browser_process.h
+++ b/chrome/test/testing_browser_process.h
@@ -140,6 +140,9 @@ class TestingBrowserProcess : public BrowserProcess {
     return shutdown_event_.get();
   }
 
+  virtual void CheckForInspectorFiles() {}
+  virtual bool have_inspector_files() const { return true; }
+
  private:
   NotificationService notification_service_;
   scoped_ptr<base::WaitableEvent> shutdown_event_;