Replace most BrowserList::empty() and BrowserList::size() calls by multi-desktop aware calls.

chrome/browser/ui/browser_finder.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 CHROME_BROWSER_UI_BROWSER_FINDER_H_
 #define CHROME_BROWSER_UI_BROWSER_FINDER_H_
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 61 matching lines @@
 // Returns the Browser object on the given desktop type whose window was most
 // recently active. If no such Browsers exist, returns NULL.
 //
 // WARNING: this is NULL until a browser becomes active. If during startup
 // a browser does not become active (perhaps the user launches Chrome, then
 // clicks on another app before the first browser window appears) then this
 // returns NULL.
 // WARNING #2: this will always be NULL in unit tests run on the bots.
 Browser* FindLastActiveWithHostDesktopType(HostDesktopType type);
 
+// Returns the number of browsers across all profiles and desktops.
+size_t GetTotalBrowserCount();
+
 // Returns the number of browsers with the Profile |profile|.
 size_t GetBrowserCount(Profile* profile);
 
 // Returns the number of tabbed browsers with the Profile |profile|.
 size_t GetTabbedBrowserCount(Profile* profile);
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_BROWSER_FINDER_H_