Moved ios popup opening code from Tab to BlockedPopupTabHelper.

ios/web/public/test/fakes/test_web_state_delegate.mm

 // Copyright 2017 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/web/public/test/fakes/test_web_state_delegate.h"
 
 #include "base/memory/ptr_util.h"
 
 namespace web {
 
+TestOpenURLRequest::TestOpenURLRequest()
+    : params(GURL(),
+             Referrer(),
+             WindowOpenDisposition::UNKNOWN,
+             ui::PAGE_TRANSITION_LINK,
+             false) {}
+
+TestOpenURLRequest::~TestOpenURLRequest() = default;
+
+TestOpenURLRequest::TestOpenURLRequest(const TestOpenURLRequest&) = default;
+
 TestRepostFormRequest::TestRepostFormRequest() {}
 
 TestRepostFormRequest::~TestRepostFormRequest() = default;
 
 TestRepostFormRequest::TestRepostFormRequest(const TestRepostFormRequest&) =
     default;
 
 TestAuthenticationRequest::TestAuthenticationRequest() {}
 
 TestAuthenticationRequest::~TestAuthenticationRequest() = default;
 
 TestAuthenticationRequest::TestAuthenticationRequest(
     const TestAuthenticationRequest&) = default;
 
 TestWebStateDelegate::TestWebStateDelegate() {}
 
 TestWebStateDelegate::~TestWebStateDelegate() = default;
 
+WebState* TestWebStateDelegate::OpenURLFromWebState(
+    WebState* web_state,
+    const WebState::OpenURLParams& params) {
+  last_open_url_request_ = base::MakeUnique<TestOpenURLRequest>();
+  last_open_url_request_->web_state = web_state;
+  last_open_url_request_->params = params;
+  return nullptr;
+}
+
 JavaScriptDialogPresenter* TestWebStateDelegate::GetJavaScriptDialogPresenter(
     WebState*) {
   get_java_script_dialog_presenter_called_ = true;
   return &java_script_dialog_presenter_;
 }
 
 bool TestWebStateDelegate::HandleContextMenu(WebState*,
                                              const ContextMenuParams&) {
   handle_context_menu_called_ = true;
   return NO;
@@ skipping 19 matching lines @@
     const AuthCallback& callback) {
   last_authentication_request_ = base::MakeUnique<TestAuthenticationRequest>();
   last_authentication_request_->web_state = source;
   last_authentication_request_->protection_space.reset(
       [protection_space retain]);
   last_authentication_request_->credential.reset([credential retain]);
   last_authentication_request_->auth_callback = callback;
 }
 
 }  // namespace web