Moved WebView(ScrollView)Proxy files to ui subdirectory.

ios/web/public/web_state/crw_web_view_scroll_view_proxy.h

-// Copyright 2014 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_SCROLL_VIEW_PROXY_H_
-#define IOS_WEB_PUBLIC_WEB_STATE_CRW_WEB_VIEW_SCROLL_VIEW_PROXY_H_
-
-#import <UIKit/UIKit.h>
-
-@protocol CRWWebViewScrollViewProxyObserver;
-
-// Provides an interface for web state observers to access the WebState's
-// UIScrollView in a limited and controlled manner.
-// This class is designed to limit lifetime of the UIScrollView such that it is
-// not retained beyond WebState. It is also a way to tunnel UIScrollViewDelegate
-// callbacks.
-// NOTE: The API exposed by the proxy class isn't intended to be restrictive.
-// The features needing to access other UIScrollView properties and methods
-// needed to drive the UIScrollView are free to extend the proxy class as
-// needed.
-// The class forwards some of the methods onto the UIScrollView. For more
-// information look at the UIScrollView documentation.
-// TODO(crbug.com/546152): rename class to CRWContentViewScrollViewProxy.
-@interface CRWWebViewScrollViewProxy : NSObject<UIScrollViewDelegate>
-@property(nonatomic, assign) CGPoint contentOffset;
-@property(nonatomic, assign) UIEdgeInsets contentInset;
-@property(nonatomic, readonly) BOOL isZooming;
-@property(nonatomic, readonly) CGFloat zoomScale;
-@property(nonatomic, assign) UIEdgeInsets scrollIndicatorInsets;
-@property(nonatomic, assign) CGSize contentSize;
-@property(nonatomic, readonly) CGRect frame;
-@property(nonatomic, getter=isScrollEnabled) BOOL scrollEnabled;
-@property(nonatomic, assign) BOOL bounces;
-@property(weak, nonatomic, readonly)
-    UIPanGestureRecognizer* panGestureRecognizer;
-// Returns the scrollview's gesture recognizers.
-@property(weak, nonatomic, readonly) NSArray* gestureRecognizers;
-
-- (void)addGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer;
-- (void)removeGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer;
-- (void)setContentOffset:(CGPoint)contentOffset animated:(BOOL)animated;
-
-// Used by the CRWWebViewProxy to set the UIScrollView to be managed.
-- (void)setScrollView:(UIScrollView*)scrollView;
-
-// Adds |observer| to subscribe to change notifications.
-- (void)addObserver:(id<CRWWebViewScrollViewProxyObserver>)observer;
-
-// Removes |observer| as a subscriber for change notifications.
-- (void)removeObserver:(id<CRWWebViewScrollViewProxyObserver>)observer;
-
-@end
-
-// A protocol to be implemented by objects to listen for changes to the
-// UIScrollView.
-// This is an exact mirror of the UIScrollViewDelegate callbacks. For more
-// information look at the UIScrollViewDelegate documentation.
-@protocol CRWWebViewScrollViewObserver<NSObject>
-@optional
-- (void)webViewScrollViewDidScroll:
-        (CRWWebViewScrollViewProxy*)webViewScrollViewProxy;
-- (void)webViewScrollViewWillBeginDragging:
-        (CRWWebViewScrollViewProxy*)webViewScrollViewProxy;
-- (void)webViewScrollViewWillEndDragging:
-            (CRWWebViewScrollViewProxy*)webViewScrollViewProxy
-                            withVelocity:(CGPoint)velocity
-                     targetContentOffset:(inout CGPoint*)targetContentOffset;
-- (void)webViewScrollViewDidEndDragging:
-            (CRWWebViewScrollViewProxy*)webViewScrollViewProxy
-                         willDecelerate:(BOOL)decelerate;
-- (void)webViewScrollViewDidEndScrollingAnimation:
-        (CRWWebViewScrollViewProxy*)webViewScrollViewProxy;
-- (void)webViewScrollViewDidEndDecelerating:
-        (CRWWebViewScrollViewProxy*)webViewScrollViewProxy;
-- (BOOL)webViewScrollViewShouldScrollToTop:
-        (CRWWebViewScrollViewProxy*)webViewScrollViewProxy;
-- (void)webViewScrollViewDidZoom:
-        (CRWWebViewScrollViewProxy*)webViewScrollViewProxy;
-- (void)webViewScrollViewDidResetContentSize:
-    (CRWWebViewScrollViewProxy*)webViewScrollViewProxy;
-@end
-
-// A protocol to be implemented by objects to listen for changes to the
-// CRWWebViewScrollViewProxyObserver.
-// It inherit from CRWWebViewScrollViewScrollViewObserver which only implements
-// methods for listening to scrollview changes.
-@protocol CRWWebViewScrollViewProxyObserver<CRWWebViewScrollViewObserver>
-@optional
-// Called when the underlying scrollview of the proxy is set.
-- (void)webViewScrollViewProxyDidSetScrollView:
-        (CRWWebViewScrollViewProxy*)webViewScrollViewProxy;
-@end
-
-#endif  // IOS_WEB_PUBLIC_WEB_STATE_CRW_WEB_VIEW_SCROLL_VIEW_PROXY_H_