Make BrowserList::(Add|Remove)Observer add the observer to every desktop's browser list.

chrome/browser/ui/browser_list.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/ui/browser_list.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_iterator.h"
 #include "chrome/browser/ui/browser_list_impl.h"
 #include "chrome/browser/ui/browser_list_observer.h"
 #include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/host_desktop.h"
 
 using content::WebContents;
 
 namespace {
 
 chrome::BrowserListImpl* GetNativeList() {
   return chrome::BrowserListImpl::GetInstance(chrome::HOST_DESKTOP_TYPE_NATIVE);
 }
 
 }  // namespace
 
 // static
 void BrowserList::AddBrowser(Browser* browser) {
   chrome::BrowserListImpl::GetInstance(browser->host_desktop_type())->
       AddBrowser(browser);
 }
 
 // static
 void BrowserList::RemoveBrowser(Browser* browser) {
   chrome::BrowserListImpl::GetInstance(browser->host_desktop_type())->
       RemoveBrowser(browser);
 }
 
 // static
 void BrowserList::AddObserver(chrome::BrowserListObserver* observer) {
-  GetNativeList()->AddObserver(observer);
+  for (chrome::HostDesktopType t = chrome::HOST_DESKTOP_TYPE_FIRST;
+       t < chrome::HOST_DESKTOP_TYPE_COUNT;
+       t = static_cast<chrome::HostDesktopType>(t + 1)) {
+    chrome::BrowserListImpl::GetInstance(t)->AddObserver(observer);
+  }
 }
 
 // static
 void BrowserList::RemoveObserver(chrome::BrowserListObserver* observer) {
-  GetNativeList()->RemoveObserver(observer);
+  for (chrome::HostDesktopType t = chrome::HOST_DESKTOP_TYPE_FIRST;
+       t < chrome::HOST_DESKTOP_TYPE_COUNT;
+       t = static_cast<chrome::HostDesktopType>(t + 1)) {
+    chrome::BrowserListImpl::GetInstance(t)->RemoveObserver(observer);
+  }
 }
 
 void BrowserList::CloseAllBrowsersWithProfile(Profile* profile) {
   BrowserVector browsers_to_close;
   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
     if (it->profile()->GetOriginalProfile() == profile->GetOriginalProfile())
       browsers_to_close.push_back(*it);
   }
 
   for (BrowserVector::const_iterator it = browsers_to_close.begin();
@@ skipping 20 matching lines @@
 
 // static
 bool BrowserList::IsOffTheRecordSessionActive() {
   return GetNativeList()->IsIncognitoWindowOpen();
 }
 
 // static
 bool BrowserList::IsOffTheRecordSessionActiveForProfile(Profile* profile) {
   return GetNativeList()->IsIncognitoWindowOpenForProfile(profile);
 }