Moved WebView(ScrollView)Proxy files to ui subdirectory.

ios/web/public/test/web_view_interaction_test_util.mm

 // Copyright 2016 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/web_view_interaction_test_util.h"
 
 #import "base/mac/bind_objc_block.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #import "base/test/ios/wait_util.h"
 #import "ios/testing/wait_util.h"
-#import "ios/web/public/web_state/crw_web_view_scroll_view_proxy.h"
-#import "ios/web/web_state/crw_web_view_proxy_impl.h"
+#import "ios/web/public/web_state/ui/crw_web_view_scroll_view_proxy.h"
 #import "ios/web/web_state/ui/crw_web_controller.h"
+#import "ios/web/web_state/ui/crw_web_view_proxy_impl.h"
 #import "ios/web/web_state/web_state_impl.h"
 
 using web::NavigationManager;
 
 namespace web {
 namespace test {
 
 enum ElementAction {
   ELEMENT_ACTION_CLICK,
   ELEMENT_ACTION_FOCUS,
@@ skipping 142 matching lines @@
 }
 
 bool SubmitWebViewFormWithId(web::WebState* web_state,
                              const std::string& form_id) {
   return RunActionOnWebViewElementWithId(web_state, form_id,
                                          ELEMENT_ACTION_SUBMIT);
 }
 
 }  // namespace test
 }  // namespace web