Add web shell matcher for address field.

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 2cd70a9616a35c4bb7c161d4f438ba7e023cbeb0..56c3d02f266a49604edf5d89de2a00c4b37c6b72 100644
--- a/ios/web/shell/test/earl_grey/shell_matchers.h
+++ b/ios/web/shell/test/earl_grey/shell_matchers.h
@@ -9,6 +9,9 @@ namespace web {
 // Shorthand for GREYMatchers::matcherForWebViewContainingText.
 id<GREYMatcher> webViewContainingText(NSString* text);
 
+// Shorthand for GREYMatchers::matcherForAddressFieldTextEqualTo.
+id<GREYMatcher> addressFieldText(NSString* text);
+
 // Shorthand for GREYMatchers::matcherForBackButton.
 id<GREYMatcher> backButton();
 
@@ -25,6 +28,9 @@ id<GREYMatcher> addressField();
 // Matcher for WKWebView containing |text|.
 + (id<GREYMatcher>)matcherForWebViewContainingText:(NSString*)text;
 
+// Matcher for web shell address field text property equal to |text|.
++ (id<GREYMatcher>)matcherForAddressFieldTextEqualTo:(NSString*)text;

[Eugene But (OOO till 7-30), 2016/05/09 15:59:08]

s/matcherForAddressFieldTextEqualTo/matcherForAddressFieldContainingText:

1.) Word before argument should describe the argument
2.) For consistency with the method above

[baxley, 2016/05/09 17:11:43]

I changed to matcherForAddressFieldEqualToText to address your first comment.

Regarding the second point, these APIs don't do the same thing. The first checks
if |text| is anywhere in the web view text. This API checks that |text| is equal
to the text property of the address field.

I think for now it's good to have and equalTo method to be strict on URLs.

+
 // Matcher for back button in web shell.
 + (id<GREYMatcher>)matcherForWebShellBackButton;