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

chrome/test/testing_browser_process.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // An implementation of BrowserProcess for unit tests that fails for most
 // services. By preventing creation of services, we reduce dependencies and
 // keep the profile clean. Clients of this class must handle the NULL return
 // value, however.
 
 #ifndef CHROME_TEST_TESTING_BROWSER_PROCESS_H_
@@ skipping 122 matching lines @@
       value = new std::string("en");
     return *value;
   }
 
   virtual MemoryModel memory_model() { return HIGH_MEMORY_MODEL; }
 
   virtual base::WaitableEvent* shutdown_event() {
     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_;
   scoped_ptr<Clipboard> clipboard_;
 
   DISALLOW_COPY_AND_ASSIGN(TestingBrowserProcess);
 };
 
 #endif  // CHROME_TEST_TESTING_BROWSER_PROCESS_H_