Fix message routing for BrowserPlugin in iframe

chrome/browser/apps/web_view_browsertest.cc

Index: chrome/browser/apps/web_view_browsertest.cc
diff --git a/chrome/browser/apps/web_view_browsertest.cc b/chrome/browser/apps/web_view_browsertest.cc
index eaaa40afd78abb53dd1d516ad7f699fb0e01e4cd..473a8d9e1064beca62c8957824a742467c248a7c 100644
--- a/chrome/browser/apps/web_view_browsertest.cc
+++ b/chrome/browser/apps/web_view_browsertest.cc
@@ -2424,6 +2424,11 @@ IN_PROC_BROWSER_TEST_F(WebViewTest, Shim_WebViewWebRequestRegistryHasNoCache) {
   EXPECT_FALSE(registry->rules_cache_delegate_for_testing());
 }
 
+// This test verifies that webview.contentWindow works inside an iframe.
+IN_PROC_BROWSER_TEST_F(WebViewTest, Shim_TestWebViewInsideFrame) {
+  LoadAppWithGuest("web_view/inside_iframe");
+}
+
 // <webview> screenshot capture fails with ubercomp.
 // See http://crbug.com/327035.
 IN_PROC_BROWSER_TEST_F(WebViewCaptureTest,