Browser Plugin: Implement Back, Forward, and Go.

content/renderer/browser_plugin/browser_plugin.h

 // Copyright (c) 2012 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  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 #define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 39 matching lines @@
 
   // Indicates whether there are any Javascript listeners attached to a
   // provided event_name.
   bool HasListeners(const std::string& event_name);
   // Add a custom event listener to this BrowserPlugin instance.
   bool AddEventListener(const std::string& event_name,
                         v8::Local<v8::Function> function);
   // Remove a custom event listener from this BrowserPlugin instance.
   bool RemoveEventListener(const std::string& event_name,
                         v8::Local<v8::Function> function);
+  // Tells the BrowserPlugin to tell the guest to navigate to the previous
+  // navigation entry in the navigation history.
+  void Back();
+  // Tells the BrowserPlugin to tell the guest to navigate to the next
+  // navigation entry in the navigation history.
+  void Forward();
+  // Tells the BrowserPlugin to tell the guest to navigate to a position
+  // relative to the current index in its navigation history.
+  void Go(int relativeIndex);
 
   // WebKit::WebPlugin implementation.
   virtual WebKit::WebPluginContainer* container() const OVERRIDE;
   virtual bool initialize(WebKit::WebPluginContainer* container) OVERRIDE;
   virtual void destroy() OVERRIDE;
   virtual NPObject* scriptableObject() OVERRIDE;
   virtual bool supportsKeyboardFocus() const OVERRIDE;
   virtual void paint(
       WebKit::WebCanvas* canvas,
       const WebKit::WebRect& rect) OVERRIDE;
@@ skipping 78 matching lines @@
   EventListenerMap event_listener_map_;
 #if defined(OS_WIN)
   base::SharedMemory shared_memory_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(BrowserPlugin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_