Context menu egtests, plus related utilities.

ios/web/shell/test/earl_grey/shell_matchers.h

Index: ios/web/shell/test/earl_grey/shell_matchers.h
diff --git a/ios/web/shell/test/earl_grey/shell_matchers.h b/ios/web/shell/test/earl_grey/shell_matchers.h
index f458b8c60ad6f462b65e44c1724329b70de6e0cf..b3bacf6f8be8de1fc8a7108112a4d2b3a3116ebd 100644
--- a/ios/web/shell/test/earl_grey/shell_matchers.h
+++ b/ios/web/shell/test/earl_grey/shell_matchers.h
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#ifndef IOS_WEB_SHELL_TEST_EARL_GREY_SHELL_MATCHERS_H_
+#define IOS_WEB_SHELL_TEST_EARL_GREY_SHELL_MATCHERS_H_
+
 #import <string>
 
 #import <EarlGrey/EarlGrey.h>
@@ -14,6 +17,9 @@ id<GREYMatcher> webViewContainingText(std::string text);
 // Matcher for WKWebView containing an html element which matches |selector|.
 id<GREYMatcher> webViewCssSelector(std::string selector);
 
+// Matcher for the WKWebView.
+id<GREYMatcher> webView();
+
 // Matcher for WKWebView's scroll view.
 id<GREYMatcher> webViewScrollView();
 
@@ -30,3 +36,5 @@ id<GREYMatcher> forwardButton();
 id<GREYMatcher> addressField();
 
 }  // namespace web
+
+#endif  // IOS_WEB_SHELL_TEST_EARL_GREY_SHELL_MATCHERS_H_