Moved WebView(ScrollView)Proxy files to ui subdirectory.

ios/web/public/web_state/ui/crw_web_view_proxy.h

 // 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_PUBLIC_WEB_STATE_CRW_WEB_VIEW_PROXY_H_
-#define IOS_WEB_PUBLIC_WEB_STATE_CRW_WEB_VIEW_PROXY_H_
+#ifndef IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_WEB_VIEW_PROXY_H_
+#define IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_WEB_VIEW_PROXY_H_
 
 #import <UIKit/UIKit.h>
 
-
 @class CRWWebViewScrollViewProxy;
 
 // Provides an interface for embedders to access the WebState's web view in a
 // limited and controlled manner.
 // TODO(crbug.com/546152): rename protocol to CRWContentViewProxy.
 @protocol CRWWebViewProxy<NSObject>
 
 // The web view's bounding rectangle (relative to its parent).
 @property(readonly, assign) CGRect bounds;
 
@@ skipping 46 matching lines @@
 // valid on iOS 9 or above.
 #if defined(__IPHONE_9_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_9_0
 - (UITextInputAssistantItem*)inputAssistantItem;
 #endif
 
 // Wrapper around the becomeFirstResponder method of the webview.
 - (BOOL)becomeFirstResponder;
 
 @end
 
-#endif  // IOS_WEB_PUBLIC_WEB_STATE_CRW_WEB_VIEW_PROXY_H_
+#endif  // IOS_WEB_PUBLIC_WEB_STATE_UI_CRW_WEB_VIEW_PROXY_H_