[DevTools] Remove dock side knowledge from browser.

chrome/browser/devtools/devtools_toggle_action.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_DEVTOOLS_DEVTOOLS_TOGGLE_ACTION_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_TOGGLE_ACTION_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 
 struct DevToolsToggleAction {
  public:
   enum Type {
     kShow,
     kShowConsole,
     kInspect,
     kToggle,
-    kReveal
+    kReveal,
+    kNothing
   };
 
   struct RevealParams {
     RevealParams(const base::string16& url,
                  size_t line_number,
                  size_t column_number);
     ~RevealParams();
 
     base::string16 url;
     size_t line_number;
     size_t column_number;
   };
 
   void operator=(const DevToolsToggleAction& rhs);
   DevToolsToggleAction(const DevToolsToggleAction& rhs);
   ~DevToolsToggleAction();
 
   static DevToolsToggleAction Show();
   static DevToolsToggleAction ShowConsole();
   static DevToolsToggleAction Inspect();
   static DevToolsToggleAction Toggle();
   static DevToolsToggleAction Reveal(const base::string16& url,
                                      size_t line_number,
                                      size_t column_number);
+  static DevToolsToggleAction Nothing();
 
   Type type() const { return type_; }
   const RevealParams* params() const { return params_.get(); }
 
  private:
   explicit DevToolsToggleAction(Type type);
   explicit DevToolsToggleAction(RevealParams* reveal_params);
 
   // The type of action.
   Type type_;
 
   // Additional parameters for the Reveal action; NULL if of any other type.
   scoped_ptr<RevealParams> params_;
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_TOGGLE_ACTION_H_