Adds some debugging code in hopes of isolating a crasher. From the...

chrome/browser/views/tabs/tab_strip.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.
 
 #ifndef CHROME_BROWSER_VIEWS_TABS_TAB_STRIP_H_
 #define CHROME_BROWSER_VIEWS_TABS_TAB_STRIP_H_
 
 #include "base/gfx/point.h"
 #include "base/message_loop.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
@@ skipping 28 matching lines @@
 //      in response to dragged tabs.
 //
 ///////////////////////////////////////////////////////////////////////////////
 class TabStrip : public views::View,
                  public TabStripModelObserver,
                  public Tab::TabDelegate,
                  public views::ButtonListener,
                  public MessageLoopForUI::Observer,
                  public TabStripWrapper {
  public:
-  TabStrip(TabStripModel* model);
+  explicit TabStrip(TabStripModel* model);
   virtual ~TabStrip();
 
   // Returns true if the TabStrip can accept input events. This returns false
   // when the TabStrip is animating to a new state and as such the user should
   // not be allowed to interact with the TabStrip.
   bool CanProcessInputEvents() const;
 
   // Accessors for the model and individual Tabs.
   TabStripModel* model() { return model_; }
 
@@ skipping 335 matching lines @@
   };
   std::vector<TabData> tab_data_;
 
   // The currently running animation.
   scoped_ptr<TabAnimation> active_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(TabStrip);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TABS_TAB_STRIP_H_