Experimental AutocompleteProvider for zerosuggest.

chrome/browser/ui/omnibox/omnibox_edit_model.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/omnibox/omnibox_edit_model.h"
 
 #include <string>
 
 #include "base/format_macros.h"
 #include "base/metrics/histogram.h"
@@ skipping 508 matching lines @@
         autocomplete_controller_->input().text(),
         just_deleted_text_,
         autocomplete_controller_->input().type(),
         popup_->selected_line(),
         -1,  // don't yet know tab ID; set later if appropriate
         ClassifyPage(controller_->GetTabContents()->
                      web_contents()->GetURL()),
         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.provider->name() == "ZeroSuggest")
+        << "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. Match provider: " << match.provider->name();
     if (index != OmniboxPopupModel::kNoMatch)
       log.selected_index = index;
     else if (!has_temporary_text_)
       log.inline_autocompleted_length = inline_autocomplete_text_.length();
     if (disposition == CURRENT_TAB) {
       // If we know the destination is being opened in the current tab,
       // we can easily get the tab ID.  (If it's being opened in a new
       // tab, we don't know the tab ID yet.)
       log.tab_id = controller_->GetTabContents()->
           session_tab_helper()->session_id().id();
@@ skipping 142 matching lines @@
 }
 
 void OmniboxEditModel::OnSetFocus(bool control_down) {
   has_focus_ = true;
   control_key_state_ = control_down ? DOWN_WITHOUT_CHANGE : UP;
 
   InstantController* instant = controller_->GetInstant();
   if (instant)
     instant->OnAutocompleteGotFocus();
 
+  TabContents* tab_contents = controller_->GetTabContents();
+  if (tab_contents) {
+    // TODO(jered): We may want to merge this into Start() and just call that
+    // here rather than having a special entry point for zero-suggest.  Note
+    // that we avoid PermanentURL() here because it's not guaranteed to give us
+    // the actual underlying current URL, e.g. if we're on the NTP and the
+    // |permanent_text_| is empty.
+    autocomplete_controller_->StartZeroSuggest(
+        tab_contents->web_contents()->GetURL(), user_text_);
+  }
+
   NotifySearchTabHelper();
 }
 
 void OmniboxEditModel::OnWillKillFocus(gfx::NativeView view_gaining_focus) {
   SetSuggestedText(string16(), INSTANT_COMPLETE_NOW);
 
   if (InstantController* instant = controller_->GetInstant())
     instant->OnAutocompleteLostFocus(view_gaining_focus);
 
+  // TODO(jered): Rip this out along with StartZeroSuggest.
+  autocomplete_controller_->StopZeroSuggest();
   NotifySearchTabHelper();
 }
 
 void OmniboxEditModel::OnKillFocus() {
   has_focus_ = false;
   control_key_state_ = UP;
   paste_state_ = NONE;
 }
 
 bool OmniboxEditModel::OnEscapeKeyPressed() {
@@ skipping 494 matching lines @@
 }
 
 void OmniboxEditModel::ClassifyStringForPasteAndGo(
     const string16& text,
     AutocompleteMatch* match,
     GURL* alternate_nav_url) const {
   DCHECK(match);
   AutocompleteClassifierFactory::GetForProfile(profile_)->Classify(text,
       string16(), false, false, match, alternate_nav_url);
 }