EG test for sessionStorage sharing.

ios/chrome/browser/web/window_open_by_dom_egtest.mm

Index: ios/chrome/browser/web/window_open_by_dom_egtest.mm
diff --git a/ios/chrome/browser/web/window_open_by_dom_egtest.mm b/ios/chrome/browser/web/window_open_by_dom_egtest.mm
index 6df1cbd2ef48826cc16d1bb0d9e0e9e3290aa31a..b1ceb2169c65f0c343761607fb48f6201ad90776 100644
--- a/ios/chrome/browser/web/window_open_by_dom_egtest.mm
+++ b/ios/chrome/browser/web/window_open_by_dom_egtest.mm
@@ -60,6 +60,26 @@ const char kTestURL[] =
   AssertMainTabCount(1);
 }
 
+// Tests that |sessionStorage| content is available for windows open by DOM via

[baxley, 2017/02/03 15:23:38]

nit: I don't quite understand "windows open by DOM", should it be "windows
opened by DOM"? Or are these technical terms that should be written that way?

[Eugene But (OOO till 7-30), 2017/02/03 19:04:23]

Yes, it should be "windows opened by DOM". Done.

+// |target="_blank"| links.
+// TODO(crbug.com/681434): Enable this test.
+- (void)DISABLED_testLinkWithBlankTargetSessionStorage {
+  using chrome_test_util::ExecuteJavaScript;
+
+  NSError* error = nil;
+  ExecuteJavaScript(@"sessionStorage.setItem('key', 'value');", &error);
+  GREYAssert(!error, @"Error during script execution: %@", error);
+
+  TapWebViewElementWithId("webScenarioWindowOpenSamePageWithBlankTarget");
+  AssertMainTabCount(2);
+  [[EarlGrey selectElementWithMatcher:WebViewContainingText("Expected result")]
+      assertWithMatcher:grey_notNil()];
+
+  id value = ExecuteJavaScript(@"sessionStorage.getItem('key');", &error);
+  GREYAssert(!error, @"Error during script execution: %@", error);
+  GREYAssert([value isEqual:@"value"], @"sessionStorage is not shared");
+}
+
 // Tests a link with target="_blank".
 - (void)testLinkWithBlankTarget {
   TapWebViewElementWithId("webScenarioWindowOpenRegularLink");