[iOS] Add Request Mobile Site cell to tools menu

ios/chrome/browser/ui/browser_view_controller.mm

 // Copyright 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.
 
 #import "ios/chrome/browser/ui/browser_view_controller.h"
 
 #import <AssetsLibrary/AssetsLibrary.h>
 #import <MobileCoreServices/MobileCoreServices.h>
 #import <PassKit/PassKit.h>
 #import <Photos/Photos.h>
@@ skipping 3275 matching lines @@
   }
 
   [_toolbarController showToolsMenuPopupWithContext:context];
   ToolsPopupController* toolsPopupController =
       [_toolbarController toolsPopupController];
   if ([_model currentTab]) {
     BOOL isBookmarked = _toolbarModelIOS->IsCurrentTabBookmarked();
     [toolsPopupController setIsCurrentPageBookmarked:isBookmarked];
     [toolsPopupController setCanShowFindBar:self.canShowFindBar];
     [toolsPopupController setCanUseReaderMode:self.canUseReaderMode];
-    [toolsPopupController
-        setCanUseDesktopUserAgent:self.canUseDesktopUserAgent];
     [toolsPopupController setCanShowShareMenu:self.canShowShareMenu];
 
+    web::UserAgentType userAgentType = [_model currentTab]
+                                           .webState->GetNavigationManager()
+                                           ->GetVisibleItem()

[kkhorimoto, 2017/02/27 23:44:24]

It's a bug, but I believe there are some instances where GetVisibleItem() might
return a nullptr.  This can happen if you cancel a pending load when it was
opened in a new Tab (or via window.open).  Let's just use NONE as a default
value if there is no visible item.

[liaoyuke, 2017/02/28 02:01:00]

Done.

+                                           ->GetUserAgentType();
+    [toolsPopupController setUserAgentType:userAgentType];

[kkhorimoto, 2017/02/27 23:44:24]

Let's use dot notation since this is a property now.

[liaoyuke, 2017/02/28 02:01:00]

Done.

+
     if (!IsIPadIdiom())
       [toolsPopupController setIsTabLoading:_toolbarModelIOS->IsLoading()];
   }
 }
 
 - (void)showPageInfoPopupForView:(UIView*)sourceView {
   Tab* tab = [_model currentTab];
   DCHECK([tab navigationManager]);
   web::NavigationItem* navItem = [tab navigationManager]->GetVisibleItem();
 
@@ skipping 1715 matching lines @@
 
 - (UIView*)voiceSearchButton {
   return _voiceSearchButton;
 }
 
 - (id<LogoAnimationControllerOwner>)logoAnimationControllerOwner {
   return [self currentLogoAnimationControllerOwner];
 }
 
 @end