Moved WebView(ScrollView)Proxy files to ui subdirectory.

ios/web/web_state/ui/crw_web_controller_container_view.mm

 // Copyright 2015 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/web_state/ui/crw_web_controller_container_view.h"
 
 #import "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #import "base/mac/scoped_nsobject.h"
 #import "ios/web/public/web_state/ui/crw_content_view.h"
 #import "ios/web/public/web_state/ui/crw_native_content.h"
 #import "ios/web/public/web_state/ui/crw_web_view_content_view.h"
-#import "ios/web/web_state/crw_web_view_proxy_impl.h"
+#import "ios/web/web_state/ui/crw_web_view_proxy_impl.h"
 
 #pragma mark - CRWToolbarContainerView
 
 // Class that manages the display of toolbars.
 @interface CRWToolbarContainerView : UIView {
   // Backing object for |self.toolbars|.
   base::scoped_nsobject<NSMutableArray> _toolbars;
 }
 
 // The toolbars currently managed by this view.
@@ skipping 314 matching lines @@
   else
     self.toolbarContainerView = nil;
 }
 
 - (void)removeAllToolbars {
   // Resetting the property will remove the toolbars from the hierarchy.
   self.toolbarContainerView = nil;
 }
 
 @end