Moved WebView(ScrollView)Proxy files to ui subdirectory.

ios/web/web_state/crw_web_view_proxy_impl.h

Index: ios/web/web_state/crw_web_view_proxy_impl.h
diff --git a/ios/web/web_state/crw_web_view_proxy_impl.h b/ios/web/web_state/crw_web_view_proxy_impl.h
deleted file mode 100644
index 53074406bc1fc2f1370e1d2ccff89caee126d5fe..0000000000000000000000000000000000000000
--- a/ios/web/web_state/crw_web_view_proxy_impl.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2013 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.
-
-#ifndef IOS_WEB_WEB_STATE_CRW_WEB_VIEW_PROXY_IMPL_H_
-#define IOS_WEB_WEB_STATE_CRW_WEB_VIEW_PROXY_IMPL_H_
-
-#import <UIKit/UIKit.h>
-
-#import "ios/web/public/web_state/crw_web_view_proxy.h"
-#import "ios/web/public/web_state/ui/crw_content_view.h"
-
-@class CRWWebController;
-
-// TODO(crbug.com/546152): Rename class to CRWContentViewProxyImpl.
-@interface CRWWebViewProxyImpl : NSObject<CRWWebViewProxy>
-
-// Used by CRWWebController to set the content view being managed.
-// |contentView|'s scroll view property will be managed by the
-// WebViewScrollViewProxy.
-@property(nonatomic, weak) CRWContentView* contentView;
-
-// Init with a weak reference of web controller, used for passing thru calls.
-- (instancetype)initWithWebController:(CRWWebController*)webController;
-
-@end
-
-#endif  // IOS_WEB_WEB_STATE_CRW_WEB_VIEW_PROXY_IMPL_H_