Context menu egtests, plus related utilities.

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

 // 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 "ios/web/shell/test/earl_grey/shell_matchers.h"
 
 #import "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
+#import "ios/testing/earl_grey/matchers.h"
 #include "ios/testing/earl_grey/wait_util.h"
 #import "ios/web/public/web_state/web_state.h"
 #import "ios/web/public/test/earl_grey/web_view_matchers.h"
 #import "ios/web/shell/test/app/web_shell_test_util.h"
 #import "ios/web/shell/view_controller.h"
 
 namespace web {
 
-id<GREYMatcher> webViewContainingText(std::string text) {
+id<GREYMatcher> webViewContainingText(const std::string& text) {
   WebState* web_state = shell_test_util::GetCurrentWebState();
   return webViewContainingText(std::move(text), web_state);
 }
 
-id<GREYMatcher> webViewCssSelector(std::string selector) {
+id<GREYMatcher> webViewCssSelector(const std::string& selector) {
   WebState* web_state = shell_test_util::GetCurrentWebState();
   return webViewCssSelector(std::move(selector), web_state);
 }
 
+id<GREYMatcher> webView() {
+  return webViewInWebState(shell_test_util::GetCurrentWebState());
+}
+
 id<GREYMatcher> webViewScrollView() {
   return webViewScrollView(shell_test_util::GetCurrentWebState());
 }
 
-id<GREYMatcher> addressFieldText(std::string text) {
+id<GREYMatcher> addressFieldText(const std::string& text) {

[Eugene But (OOO till 7-30), 2016/08/31 15:27:59]

This is going to break tests

   MatchesBlock matches = ^BOOL(UIView* view) {
     if (![view isKindOfClass:[UITextField class]]) {
       return NO;
     }
     if (![[view accessibilityLabel]
             isEqualToString:kWebShellAddressFieldAccessibilityLabel]) {
       return NO;
     }
     UITextField* text_field = base::mac::ObjCCastStrict<UITextField>(view);
     testing::WaitUntilCondition(testing::kWaitForUIElementTimeout, ^bool() {
@@ skipping 18 matching lines @@
 
 id<GREYMatcher> forwardButton() {
   return grey_accessibilityLabel(kWebShellForwardButtonAccessibilityLabel);
 }
 
 id<GREYMatcher> addressField() {
   return grey_accessibilityLabel(kWebShellAddressFieldAccessibilityLabel);
 }
 
 }  // namespace web