Part 1 of dragging extensions on the shelf. This part was just about getting...

chrome/browser/views/frame/browser_view.cc

 // Copyright (c) 2006-2009 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.
 
 #include "chrome/browser/views/frame/browser_view.h"
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 549 matching lines @@
                              kDefaultPluginMessageResponseTimeout);
   prefs->RegisterIntegerPref(prefs::kHungPluginDetectFrequency,
                              kDefaultHungPluginDetectFrequency);
 }
 
 void BrowserView::AttachBrowserBubble(BrowserBubble* bubble) {
   browser_bubbles_.insert(bubble);
 }
 
 void BrowserView::DetachBrowserBubble(BrowserBubble* bubble) {
-  browser_bubbles_.erase(bubble);
+  BubbleSet::iterator it = browser_bubbles_.find(bubble);
+  if (it != browser_bubbles_.end())
+    browser_bubbles_.erase(it);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // BrowserView, BrowserWindow implementation:
 
 void BrowserView::Show() {
   // If the window is already visible, just activate it.
   if (frame_->GetWindow()->IsVisible()) {
     frame_->GetWindow()->Activate();
     return;
@@ skipping 1174 matching lines @@
 
 // static
 FindBar* BrowserWindow::CreateFindBar(Browser* browser) {
   return browser::CreateFindBar(static_cast<BrowserView*>(browser->window()));
 }
 
 // static
 void BrowserList::AllBrowsersClosed() {
   views::Window::CloseAllSecondaryWindows();
 }