Linux: middle-click to navigate

chrome/browser/views/tab_contents/tab_contents_view_gtk.h

 // Copyright (c) 2009 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_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_
 #define CHROME_BROWSER_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_
 
 #include "base/gfx/size.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
@@ skipping 35 matching lines @@
   virtual void StoreFocus();
   virtual void RestoreFocus();
 
   // Backend implementation of RenderViewHostDelegate::View.
   virtual void ShowContextMenu(const ContextMenuParams& params);
   virtual void StartDragging(const WebDropData& drop_data);
   virtual void UpdateDragCursor(bool is_drop_target);
   virtual void GotFocus();
   virtual void TakeFocus(bool reverse);
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
+  virtual void HandleMouseButtonEvent(const WebKit::WebInputEvent* event);
 
  private:
   // Signal handlers -----------------------------------------------------------
 
   // Overridden from views::WidgetGtk:
   virtual void OnSizeAllocate(GtkWidget* widget, GtkAllocation* allocation);
 
   // Handles notifying the TabContents and other operations when the window was
   // shown or hidden.
   void WasHidden();
@@ skipping 12 matching lines @@
   // Whether to ignore the next CHAR keyboard event.
   bool ignore_next_char_event_;
 
   // The context menu. Callbacks are asynchronous so we need to keep it around.
   scoped_ptr<RenderViewContextMenuWin> context_menu_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsViewGtk);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_