Add support for providers called when the omnibox is focused.

chrome/browser/ui/omnibox/omnibox_edit_model.cc

 // Copyright 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 <algorithm>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 930 matching lines @@
   // in the omnibox and selecting paste in Linux (in which case we actually get
   // the OnSetFocus() call after the process of handling the paste has kicked
   // off).
   // TODO(hfung): Remove this when crbug/271590 is fixed.
   if (delegate_->CurrentPageExists() && !user_input_in_progress_) {
     // 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(AutocompleteInput(
+    autocomplete_controller()->OnOmniboxFocused(AutocompleteInput(
         permanent_text_, base::string16::npos, std::string(),
         delegate_->GetURL(), ClassifyPage(), false, false, true, true,
         ChromeAutocompleteSchemeClassifier(profile_)));
   }
 
   if (user_input_in_progress_ || !in_revert_)
     delegate_->OnInputStateChanged();
 }
 
 void OmniboxEditModel::SetCaretVisibility(bool visible) {
@@ skipping 513 matching lines @@
   // Update state and notify view if the omnibox has focus and the caret
   // visibility changed.
   const bool was_caret_visible = is_caret_visible();
   focus_state_ = state;
   if (focus_state_ != OMNIBOX_FOCUS_NONE &&
       is_caret_visible() != was_caret_visible)
     view_->ApplyCaretVisibility();
 
   delegate_->OnFocusChanged(focus_state_, reason);
 }