Make chrome::Navigate take in a Browser* that is never NULL. That function doesn't have a context, …

chrome/browser/extensions/extension_tab_util.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_tab_util.h"
 
 #include "chrome/browser/extensions/api/tabs/tabs_constants.h"
 #include "chrome/browser/extensions/extension_tab_helper.h"
 #include "chrome/browser/net/url_fixer_upper.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 208 matching lines @@
   return (fixed_url.SchemeIs(chrome::kChromeUIScheme) &&
           (fixed_url.host() == chrome::kChromeUIBrowserCrashHost ||
            fixed_url.host() == chrome::kChromeUICrashHost));
 }
 
 void ExtensionTabUtil::CreateTab(WebContents* web_contents,
                                  const std::string& extension_id,
                                  WindowOpenDisposition disposition,
                                  const gfx::Rect& initial_pos,
                                  bool user_gesture) {
-  // Find a browser with a profile that matches the new tab. If none is found,
-  // NULL argument to NavigateParams is valid.
   Profile* profile =
       Profile::FromBrowserContext(web_contents->GetBrowserContext());
-
-  Browser* browser = browser::FindTabbedBrowser(
-      profile, false);  // Match incognito exactly.
+  Browser* browser = browser::FindOrCreateTabbedBrowser(profile);
   TabContents* tab_contents = new TabContents(web_contents);
   chrome::NavigateParams params(browser, tab_contents);
 
   // The extension_app_id parameter ends up as app_name in the Browser
   // which causes the Browser to return true for is_app().  This affects
   // among other things, whether the location bar gets displayed.
   // TODO(mpcomplete): This seems wrong. What if the extension content is hosted
   // in a tab?
   if (disposition == NEW_POPUP)
     params.extension_app_id = extension_id;
 
-  if (!browser)
-    params.profile = profile;
   params.disposition = disposition;
   params.window_bounds = initial_pos;
   params.window_action = chrome::NavigateParams::SHOW_WINDOW;
   params.user_gesture = user_gesture;
   chrome::Navigate(&params);
 }