[ios] Implemented Meta Tags EarlGrey tests.

ios/web/shell/test/page_state_egtest.mm

Index: ios/web/shell/test/page_state_egtest.mm
diff --git a/ios/web/shell/test/web_shell_page_state_egtest.mm b/ios/web/shell/test/page_state_egtest.mm
similarity index 97%
rename from ios/web/shell/test/web_shell_page_state_egtest.mm
rename to ios/web/shell/test/page_state_egtest.mm
index 4e6a09613992236fd576c9b670ef75d2dc8b38bf..055baded6af29c3259f5ddf53c73fe3709a6a608 100644
--- a/ios/web/shell/test/web_shell_page_state_egtest.mm
+++ b/ios/web/shell/test/page_state_egtest.mm
@@ -52,11 +52,10 @@ using web::test::HttpServer;
 using web::webViewContainingText;
 
 // Page state test cases for the web shell.
-@interface CRWWebShellPageStateTest : ShellBaseTestCase
-

[baxley, 2016/07/22 18:36:18]

super-tiny nit: Should we make this the same in the other tests files? I don't
know if the style rule is to have a blank line or not in an empty @interface, so
either is fine with me.

[Eugene But (OOO till 7-30), 2016/07/22 22:56:57]

There is no rule for this, probably did by accident. Change everywhere in a
separate CL.

+@interface PageStateTest : ShellBaseTestCase
 @end
 
-@implementation CRWWebShellPageStateTest
+@implementation PageStateTest
 
 // Tests that page scroll position of a page is restored upon returning to the
 // page via the back/forward buttons.