Instant: Don't allow the page to set suggestions inappropriately.

chrome/browser/ui/search/instant_extended_browsertest.cc

Index: chrome/browser/ui/search/instant_extended_browsertest.cc
diff --git a/chrome/browser/ui/search/instant_extended_browsertest.cc b/chrome/browser/ui/search/instant_extended_browsertest.cc
index fbe3f0efe21271844312aa5cc1de117d418c00ed..7ddbfa59f8a3e10cee36e623f85d32954133d447 100644
--- a/chrome/browser/ui/search/instant_extended_browsertest.cc
+++ b/chrome/browser/ui/search/instant_extended_browsertest.cc
@@ -1429,3 +1429,22 @@ IN_PROC_BROWSER_TEST_F(InstantExtendedTest, LocalNTPIsNotLocalOverlay) {
   EXPECT_EQ(GURL(chrome::kChromeSearchLocalNtpUrl),
             instant()->ntp_->contents()->GetURL());
 }
+
+// Test that suggestions are not accepted when unexpected.
+IN_PROC_BROWSER_TEST_F(InstantExtendedTest, DeniesUnexpectedSuggestions) {
+  ASSERT_NO_FATAL_FAILURE(SetupInstant(browser()));
+  FocusOmniboxAndWaitForInstantExtendedSupport();
+  SetOmniboxTextAndWaitForOverlayToShow("chip");
+  SendDownArrow();
+
+  EXPECT_EQ("result 1", GetOmniboxText());
+  EXPECT_EQ(ASCIIToUTF16(""), GetGrayText());
+
+  // Make the page send an unexpected suggestion.
+  EXPECT_TRUE(ExecuteScript("suggestion = 'chippies';"
+                            "handleOnChange();"));
+
+  // Verify that the suggestion is ignored.
+  EXPECT_EQ("result 1", GetOmniboxText());
+  EXPECT_EQ(ASCIIToUTF16(""), GetGrayText());
+}