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 421 matching lines @@
   autocomplete_controller_->Start(
       user_text_, GetDesiredTLD(),
       prevent_inline_autocomplete || just_deleted_text_ ||
       (has_selected_text && inline_autocomplete_text_.empty()) ||
       (paste_state_ != NONE), keyword_is_selected,
       keyword_is_selected || allow_exact_keyword_match_,
       AutocompleteInput::ALL_MATCHES);
 }
 
 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 {
   if (!view_->command_updater()->IsCommandEnabled(IDC_OPEN_CURRENT_URL))
     return false;
 
   AutocompleteMatch match;
   ClassifyStringForPasteAndGo(text, &match, NULL);
   return match.destination_url.is_valid();
 }
@@ skipping 64 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.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_)
       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()->
           restore_tab_helper()->session_id().id();
@@ skipping 141 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();
 
+  autocomplete_controller_->StartZerosuggest(PermanentURL(), user_text_);
+
   NotifySearchTabHelper();
 }
 
 void OmniboxEditModel::OnWillKillFocus(gfx::NativeView view_gaining_focus) {
   SetSuggestedText(string16(), INSTANT_COMPLETE_NOW);
 
   InstantController* instant = controller_->GetInstant();
   if (instant)
     instant->OnAutocompleteLostFocus(view_gaining_focus);
 
+  autocomplete_controller_->StopZerosuggest();
   NotifySearchTabHelper();
 }
 
 void OmniboxEditModel::OnKillFocus() {
   has_focus_ = false;
   control_key_state_ = UP;
   paste_state_ = NONE;
 }
 
 bool OmniboxEditModel::OnEscapeKeyPressed() {
@@ skipping 474 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);
 }