[ios] EarlGrey test for scroll position restoration.

ios/web/public/test/earl_grey/web_view_matchers.h

 // Copyright 2016 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 <string>
 
 #import <EarlGrey/EarlGrey.h>
 
 #import "ios/web/public/web_state/web_state.h"
 
 namespace web {
 
 // Shorthand for GREYMatchers::matcherForWebViewContainingText:inWebState.
 id<GREYMatcher> webViewContainingText(const std::string& text,
                                       web::WebState* webState);
 
+// Shorthand for matcherForWebViewScrollViewInWebState:.

[baxley, 2016/07/20 15:27:25]

nit: no ':' (comments in the other matchers file doesn't have this).

[baxley, 2016/07/20 15:27:25]

nit: could you add GREYMatchers::, or remove it from the other comment on line
13.

[Eugene But (OOO till 7-30), 2016/07/20 16:09:39]

Done.

[Eugene But (OOO till 7-30), 2016/07/20 16:09:40]

Done.

+id<GREYMatcher> webViewScrollView(web::WebState* webState);
+
 }  // namespace web
 
 @interface GREYMatchers (WebViewAdditions)
 
 // Matcher for WKWebView containing |text|.
 + (id<GREYMatcher>)matcherForWebViewContainingText:(const std::string&)text
                                         inWebState:(web::WebState*)webState;
 
+// Matcher for WKWebView's scroll view.
++ (id<GREYMatcher>)matcherForWebViewScrollViewInWebState:
+    (web::WebState*)webState;
+
 @end