Move instant support to SearchTabHelper.

chrome/browser/ui/search/search_tab_helper.cc

Index: chrome/browser/ui/search/search_tab_helper.cc
diff --git a/chrome/browser/ui/search/search_tab_helper.cc b/chrome/browser/ui/search/search_tab_helper.cc
index 5086f81134839ebe362d9dfa161dbb4a6af203d6..c97b788842f42ff386292f92ee96cc150a03f657 100644
--- a/chrome/browser/ui/search/search_tab_helper.cc
+++ b/chrome/browser/ui/search/search_tab_helper.cc
@@ -90,11 +90,22 @@ bool SearchTabHelper::OnMessageReceived(const IPC::Message& message) {
                         OnSearchBoxShowBars)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_SearchBoxHideBars,
                         OnSearchBoxHideBars)
+    IPC_MESSAGE_HANDLER(ChromeViewHostMsg_InstantSupportDetermined,
+                        OnInstantSupportDeterminedMsgReceived)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
+void SearchTabHelper::DidFinishLoad(
+    int64 /* frame_id */,
+    const GURL& /* validated_url */,
+    bool is_main_frame,
+    content::RenderViewHost* /* render_view_host */) {
+  if (is_main_frame)
+    DetermineIfPageSupportsInstant();
+}
+
 void SearchTabHelper::UpdateMode() {
   SearchMode::Type type = SearchMode::MODE_DEFAULT;
   SearchMode::Origin origin = SearchMode::ORIGIN_DEFAULT;
@@ -117,12 +128,17 @@ void SearchTabHelper::UpdateMode() {
     // OmniboxEditModel::SetInputInProgress() which is called from
     // OmniboxEditModel::Revert().
     model_.SetState(SearchModel::State(SearchMode(type, origin),
-                                       model_.state().top_bars_visible));
+                                       model_.state().top_bars_visible,
+                                       model_.instant_support()));
   } else {
     model_.SetMode(SearchMode(type, origin));
   }
 }
 
+void SearchTabHelper::DetermineIfPageSupportsInstant() {
+  Send(new ChromeViewMsg_DetermineIfPageSupportsInstant(routing_id()));
+}
+
 void SearchTabHelper::OnSearchBoxShowBars(int page_id) {
   if (web_contents()->IsActiveEntry(page_id))
     model_.SetTopBarsVisible(true);
@@ -134,3 +150,10 @@ void SearchTabHelper::OnSearchBoxHideBars(int page_id) {
     Send(new ChromeViewMsg_SearchBoxBarsHidden(routing_id()));
   }
 }
+
+void SearchTabHelper::OnInstantSupportDeterminedMsgReceived(
+    int page_id,
+    bool supports_instant) {
+  if (web_contents()->IsActiveEntry(page_id))
+    model_.SetSupportsInstant(supports_instant);
+}