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

chrome/browser/devtools/browser_list_tabcontents_provider.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/devtools/browser_list_tabcontents_provider.h"
 
 #include "base/path_service.h"
 #include "chrome/browser/history/top_sites.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 65 matching lines @@
     scoped_refptr<base::RefCountedMemory> data;
     if (top_sites->GetPageThumbnail(url, &data))
       return std::string(
           reinterpret_cast<const char*>(data->front()), data->size());
   }
 
   return std::string();
 }
 
 RenderViewHost* BrowserListTabContentsProvider::CreateNewTarget() {
-  if (BrowserList::empty())
-    chrome::NewEmptyWindow(profile_);
-
-  if (BrowserList::empty())
-    return NULL;
-
   // TODO(gab): Do not hardcode HOST_DESKTOP_TYPE_NATIVE below once
   // chrome::NewEmptyWindow() above has been made multi-desktop friendly.
   const chrome::BrowserListImpl* browser_list =
       chrome::BrowserListImpl::GetInstance(chrome::HOST_DESKTOP_TYPE_NATIVE);
+
+  if (browser_list->empty())
+    chrome::NewEmptyWindow(profile_);
+
+  if (browser_list->empty())
+    return NULL;
+
   content::WebContents* web_contents = chrome::AddSelectedTabWithURL(
       browser_list->get(0),
       GURL(chrome::kAboutBlankURL),
       content::PAGE_TRANSITION_LINK);
   return web_contents->GetRenderViewHost();
 }
 
 content::DevToolsHttpHandlerDelegate::TargetType
 BrowserListTabContentsProvider::GetTargetType(content::RenderViewHost* rvh) {
   for (TabContentsIterator it; !it.done(); it.Next())
     if (rvh == it->GetRenderViewHost())
       return kTargetTypeTab;
 
   return kTargetTypeOther;
 }