DownloadManagerController now uses WebState

ios/chrome/browser/tabs/tab.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/tabs/tab.h"
 
 #import <CoreLocation/CoreLocation.h>
 #import <UIKit/UIKit.h>
 
 #include <utility>
@@ skipping 1426 matching lines @@
 - (void)closeThisTab {
   if (!parentTabModel_)
     return;
 
   NSUInteger index = [parentTabModel_ indexOfTab:self];
   if (index != NSNotFound)
     [parentTabModel_ closeTabAtIndex:index];
 }
 
 - (id<CRWNativeContent>)controllerForUnhandledContentAtURL:(const GURL&)url {
-  StoreKitTabHelper* helper = StoreKitTabHelper::FromWebState(self.webState);
-  if (!helper)
-    return nil;
-  id<StoreKitLauncher> storeKitLauncher = helper->GetLauncher();
-  if (!storeKitLauncher)
-    return nil;
+  // Shows download manager UI for unhandled content.
   DownloadManagerController* downloadController =
-      [[[DownloadManagerController alloc]
-                   initWithURL:url
-          requestContextGetter:browserState_->GetRequestContext()
-              storeKitLauncher:storeKitLauncher] autorelease];
+      [[[DownloadManagerController alloc] initWithWebState:self.webState
+                                               downloadURL:url] autorelease];
   [downloadController start];
   return downloadController;
 }
 
 - (void)handleExportableFile:(net::HttpResponseHeaders*)headers {
   // Only "application/pdf" is supported for now.
   if (self.webState->GetContentsMimeType() != "application/pdf")
     return;
 
   [[NSNotificationCenter defaultCenter]
@@ skipping 756 matching lines @@
 
 - (TabModel*)parentTabModel {
   return parentTabModel_;
 }
 
 - (FormInputAccessoryViewController*)inputAccessoryViewController {
   return inputAccessoryViewController_.get();
 }
 
 @end