Experimental AutocompleteProvider for zerosuggest.

chrome/browser/ui/omnibox/omnibox_edit_model.cc

Index: chrome/browser/ui/omnibox/omnibox_edit_model.cc
diff --git a/chrome/browser/ui/omnibox/omnibox_edit_model.cc b/chrome/browser/ui/omnibox/omnibox_edit_model.cc
index 131ee220f3452f182e9fa35e129002f7e3b34feb..228ca0eff6f0c557c834ad0bc9b1f2d1a46eb09c 100644
--- a/chrome/browser/ui/omnibox/omnibox_edit_model.cc
+++ b/chrome/browser/ui/omnibox/omnibox_edit_model.cc
@@ -439,13 +439,15 @@ void OmniboxEditModel::StartAutocomplete(
 }
 
 void OmniboxEditModel::StopAutocomplete() {
-  if (popup_->IsOpen() && !in_revert_) {
-    InstantController* instant = controller_->GetInstant();
-    if (instant && !instant->commit_on_pointer_release())
-      instant->DestroyPreviewContents();
-  }
+  if (popup_->IsOpen()) {
+    if (!in_revert_) {
+      InstantController* instant = controller_->GetInstant();
+      if (instant && !instant->commit_on_pointer_release())
+        instant->DestroyPreviewContents();
+    }
 
-  autocomplete_controller_->Stop(true);
+    autocomplete_controller_->Stop(true);
+  }
 }
 
 bool OmniboxEditModel::CanPasteAndGo(const string16& text) const {
@@ -530,9 +532,12 @@ void OmniboxEditModel::OpenMatch(const AutocompleteMatch& match,
         base::TimeTicks::Now() - time_user_first_modified_omnibox_,
         0,  // inline autocomplete length; possibly set later
         result());
-    DCHECK(user_input_in_progress_) << "We didn't get here through the "
-        "expected series of calls.  time_user_first_modified_omnibox_ is "
-        "not set correctly and other things may be wrong.";
+    DCHECK(user_input_in_progress_ ||
+           match.type == AutocompleteMatch::SEARCH_ZEROSUGGEST ||
+           match.type == AutocompleteMatch::SEARCH_ZEROSUGGEST_URL)
+        << "We didn't get here through the expected series of calls. "
+        << "time_user_first_modified_omnibox_ is not set correctly and other "
+        << "things may be wrong.";
     if (index != OmniboxPopupModel::kNoMatch)
       log.selected_index = index;
     else if (!has_temporary_text_)
@@ -694,6 +699,8 @@ void OmniboxEditModel::OnSetFocus(bool control_down) {
   if (instant)
     instant->OnAutocompleteGotFocus();
 
+  autocomplete_controller_->StartZerosuggest(PermanentURL(), user_text_);
+
   NotifySearchTabHelper();
 }
 
@@ -704,6 +711,7 @@ void OmniboxEditModel::OnWillKillFocus(gfx::NativeView view_gaining_focus) {
   if (instant)
     instant->OnAutocompleteLostFocus(view_gaining_focus);
 
+  autocomplete_controller_->StopZerosuggest();
   NotifySearchTabHelper();
 }