Don't crash on chrome.runtime.connect().

chrome/browser/extensions/extension_messages_apitest.cc

Index: chrome/browser/extensions/extension_messages_apitest.cc
diff --git a/chrome/browser/extensions/extension_messages_apitest.cc b/chrome/browser/extensions/extension_messages_apitest.cc
index 19c5b20fee0bace8257e088834696c253a0ae4d7..1c430525767a19fc48f29fe444ca8e4da938ac36 100644
--- a/chrome/browser/extensions/extension_messages_apitest.cc
+++ b/chrome/browser/extensions/extension_messages_apitest.cc
@@ -879,6 +879,19 @@ IN_PROC_BROWSER_TEST_F(ExternallyConnectableMessagingTest,
   }
 }
 
+IN_PROC_BROWSER_TEST_F(ExternallyConnectableMessagingTest, IllegalArguments) {
+  // Tests that malformed arguments to connect() don't crash.
+  // Regression test for crbug.com/472700.
+  InitializeTestServer();
+  LoadChromiumConnectableExtension();
+  ui_test_utils::NavigateToURL(browser(), chromium_org_url());
+  bool result;
+  CHECK(content::ExecuteScriptAndExtractBool(
+      browser()->tab_strip_model()->GetActiveWebContents(),
+      "assertions.tryIllegalArguments()", &result));
+  EXPECT_TRUE(result);
+}
+
 IN_PROC_BROWSER_TEST_F(ExternallyConnectableMessagingTest,
                        FromIncognitoAllowExtension) {
   InitializeTestServer();