Moved WebView(ScrollView)Proxy files to ui subdirectory.

ios/web/web_state/crw_web_view_proxy_impl.mm

-// 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.
-
-#import "ios/web/web_state/crw_web_view_proxy_impl.h"
-
-#import "base/mac/scoped_nsobject.h"
-#import "ios/web/public/web_state/crw_web_view_scroll_view_proxy.h"
-#import "ios/web/public/web_state/ui/crw_content_view.h"
-#import "ios/web/web_state/ui/crw_web_controller.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-namespace {
-
-// Returns the first responder in the subviews of |view|, or nil if no view in
-// the subtree is the first responder.
-UIView* GetFirstResponderSubview(UIView* view) {
-  if ([view isFirstResponder])
-    return view;
-
-  for (UIView* subview in [view subviews]) {
-    UIView* firstResponder = GetFirstResponderSubview(subview);
-    if (firstResponder)
-      return firstResponder;
-  }
-
-  return nil;
-}
-
-}  // namespace
-
-@interface CRWWebViewScrollViewProxy (ContentInsetsAlgebra)
-// Adds the given insets to the current content insets and scroll indicator
-// insets of the receiver.
-- (void)cr_addInsets:(UIEdgeInsets)insets;
-// Removes the given insets to the current content insets and scroll indicator
-// insets of the receiver.
-- (void)cr_removeInsets:(UIEdgeInsets)insets;
-@end
-
-@implementation CRWWebViewScrollViewProxy (ContentInsetsAlgebra)
-
-- (void)cr_addInsets:(UIEdgeInsets)insets {
-  if (UIEdgeInsetsEqualToEdgeInsets(insets, UIEdgeInsetsZero))
-    return;
-
-  UIEdgeInsets currentInsets = [self contentInset];
-  currentInsets.top += insets.top;
-  currentInsets.left += insets.left;
-  currentInsets.bottom += insets.bottom;
-  currentInsets.right += insets.right;
-  [self setContentInset:currentInsets];
-  [self setScrollIndicatorInsets:currentInsets];
-}
-
-- (void)cr_removeInsets:(UIEdgeInsets)insets {
-  UIEdgeInsets negativeInsets = UIEdgeInsetsZero;
-  negativeInsets.top = -insets.top;
-  negativeInsets.left = -insets.left;
-  negativeInsets.bottom = -insets.bottom;
-  negativeInsets.right = -insets.right;
-  [self cr_addInsets:negativeInsets];
-}
-
-@end
-
-@implementation CRWWebViewProxyImpl {
-  __weak CRWWebController* _webController;
-  base::scoped_nsobject<NSMutableDictionary> _registeredInsets;
-  // The WebViewScrollViewProxy is a wrapper around the web view's
-  // UIScrollView to give components access in a limited and controlled manner.
-  base::scoped_nsobject<CRWWebViewScrollViewProxy> _contentViewScrollViewProxy;
-}
-@synthesize contentView = _contentView;
-
-- (instancetype)initWithWebController:(CRWWebController*)webController {
-  self = [super init];
-  if (self) {
-    DCHECK(webController);
-    _registeredInsets.reset([[NSMutableDictionary alloc] init]);
-    _webController = webController;
-    _contentViewScrollViewProxy.reset([[CRWWebViewScrollViewProxy alloc] init]);
-  }
-  return self;
-}
-
-- (CRWWebViewScrollViewProxy*)scrollViewProxy {
-  return _contentViewScrollViewProxy.get();
-}
-
-- (CGRect)bounds {
-  return [_contentView bounds];
-}
-
-- (CGRect)frame {
-  return [_contentView frame];
-}
-
-- (CGFloat)topContentPadding {
-  return [_contentView topContentPadding];
-}
-
-- (void)setTopContentPadding:(CGFloat)newTopContentPadding {
-  [_contentView setTopContentPadding:newTopContentPadding];
-}
-
-- (NSArray*)gestureRecognizers {
-  return [_contentView gestureRecognizers];
-}
-
-- (void)addGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer {
-  [_contentView addGestureRecognizer:gestureRecognizer];
-}
-
-- (void)removeGestureRecognizer:(UIGestureRecognizer*)gestureRecognizer {
-  [_contentView removeGestureRecognizer:gestureRecognizer];
-}
-
-- (BOOL)shouldUseInsetForTopPadding {
-  SEL shouldUseInsetSelector = @selector(shouldUseInsetForTopPadding);
-  return [_contentView respondsToSelector:shouldUseInsetSelector] &&
-         [_contentView shouldUseInsetForTopPadding];
-}
-
-- (void)setShouldUseInsetForTopPadding:(BOOL)shouldUseInsetForTopPadding {
-  if ([_contentView
-          respondsToSelector:@selector(setShouldUseInsetForTopPadding:)]) {
-    [_contentView setShouldUseInsetForTopPadding:shouldUseInsetForTopPadding];
-  }
-}
-
-- (void)registerInsets:(UIEdgeInsets)insets forCaller:(id)caller {
-  NSValue* callerValue = [NSValue valueWithNonretainedObject:caller];
-  if ([_registeredInsets objectForKey:callerValue])
-    [self unregisterInsetsForCaller:caller];
-  [self.scrollViewProxy cr_addInsets:insets];
-  [_registeredInsets setObject:[NSValue valueWithUIEdgeInsets:insets]
-                        forKey:callerValue];
-}
-
-- (void)unregisterInsetsForCaller:(id)caller {
-  NSValue* callerValue = [NSValue valueWithNonretainedObject:caller];
-  NSValue* insetsValue = [_registeredInsets objectForKey:callerValue];
-  [self.scrollViewProxy cr_removeInsets:[insetsValue UIEdgeInsetsValue]];
-  [_registeredInsets removeObjectForKey:callerValue];
-}
-
-- (void)setContentView:(CRWContentView*)contentView {
-  _contentView = contentView;
-  [_contentViewScrollViewProxy setScrollView:contentView.scrollView];
-}
-
-- (void)addSubview:(UIView*)view {
-  return [_contentView addSubview:view];
-}
-
-- (BOOL)hasSearchableTextContent {
-  return _contentView != nil && [_webController contentIsHTML];
-}
-
-- (UIView*)keyboardAccessory {
-  if (!_contentView)
-    return nil;
-  UIView* firstResponder = GetFirstResponderSubview(_contentView);
-  return firstResponder.inputAccessoryView;
-}
-
-- (UITextInputAssistantItem*)inputAssistantItem {
-  if (!_contentView)
-    return nil;
-  UIView* firstResponder = GetFirstResponderSubview(_contentView);
-  return firstResponder.inputAssistantItem;
-}
-
-- (BOOL)becomeFirstResponder {
-  return [_contentView becomeFirstResponder];
-}
-
-@end