Remove DetermineIfPageSupportsInstant and all its plumbing

chrome/browser/ui/search/instant_tab_unittest.cc

Index: chrome/browser/ui/search/instant_tab_unittest.cc
diff --git a/chrome/browser/ui/search/instant_tab_unittest.cc b/chrome/browser/ui/search/instant_tab_unittest.cc
index 39914f43849399d6be3d643937793328fdc46adf..11da6ed1595d5255872387d5910cf25f433a7aa1 100644
--- a/chrome/browser/ui/search/instant_tab_unittest.cc
+++ b/chrome/browser/ui/search/instant_tab_unittest.cc
@@ -75,24 +75,6 @@ void InstantTabTest::SetUp() {
       .set_search_box_client_factory_for_testing(std::move(factory));
 }
 
-TEST_F(InstantTabTest, DetermineIfPageSupportsInstant_Local) {
-  page.reset(new InstantTab(&delegate, web_contents()));
-  EXPECT_FALSE(SupportsInstant());
-  page->Init();
-  NavigateAndCommit(GURL(chrome::kChromeSearchLocalNtpUrl));
-  search_tab()->DetermineIfPageSupportsInstant();
-  EXPECT_TRUE(SupportsInstant());
-}
-
-TEST_F(InstantTabTest, DetermineIfPageSupportsInstant_NonLocal) {
-  page.reset(new InstantTab(&delegate, web_contents()));
-  EXPECT_FALSE(SupportsInstant());
-  page->Init();
-  NavigateAndCommit(GURL("chrome-search://foo/bar"));
-  EXPECT_CALL(mock_search_box, DetermineIfPageSupportsInstant());
-  search_tab()->DetermineIfPageSupportsInstant();
-}
-
 TEST_F(InstantTabTest, PageURLDoesntBelongToInstantRenderer) {
   page.reset(new InstantTab(&delegate, web_contents()));
   EXPECT_FALSE(SupportsInstant());
@@ -100,24 +82,16 @@ TEST_F(InstantTabTest, PageURLDoesntBelongToInstantRenderer) {
   page->Init();
 
   // Navigate to a page URL that doesn't belong to Instant renderer.
-  // SearchTabHelper::DeterminerIfPageSupportsInstant() should return
-  // immediately without dispatching any message to the renderer.
   NavigateAndCommit(GURL("http://www.example.com"));
-  EXPECT_CALL(mock_search_box, DetermineIfPageSupportsInstant()).Times(0);
 
-  search_tab()->DetermineIfPageSupportsInstant();
   EXPECT_FALSE(SupportsInstant());
 }
 
-// Test to verify that ChromeViewMsg_DetermineIfPageSupportsInstant message
-// reply handler updates the instant support state in InstantTab.
 TEST_F(InstantTabTest, PageSupportsInstant) {
   page.reset(new InstantTab(&delegate, web_contents()));
   EXPECT_FALSE(SupportsInstant());
   page->Init();
   NavigateAndCommit(GURL("chrome-search://foo/bar"));
-  EXPECT_CALL(mock_search_box, DetermineIfPageSupportsInstant());
-  search_tab()->DetermineIfPageSupportsInstant();
 
   // Assume the page supports instant. Invoke the message reply handler to make
   // sure the InstantTab is notified about the instant support state.