Optimization: not sending answer server requests for voice queries.

ui/app_list/search_box_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 "ui/app_list/search_box_model.h"
 
 #include <utility>
 
 #include "base/metrics/histogram_macros.h"
 #include "ui/app_list/search_box_model_observer.h"
 
 namespace app_list {
 
 SearchBoxModel::SpeechButtonProperty::SpeechButtonProperty(
     const gfx::ImageSkia& on_icon,
     const base::string16& on_tooltip,
     const gfx::ImageSkia& off_icon,
     const base::string16& off_tooltip,
     const base::string16& accessible_name)
     : on_icon(on_icon),
       on_tooltip(on_tooltip),
       off_icon(off_icon),
       off_tooltip(off_tooltip),
       accessible_name(accessible_name) {
 }
 
 SearchBoxModel::SpeechButtonProperty::~SpeechButtonProperty() {
 }
 
-SearchBoxModel::SearchBoxModel() {
-}
+SearchBoxModel::SearchBoxModel() {}
 
 SearchBoxModel::~SearchBoxModel() {
 }
 
 void SearchBoxModel::SetSpeechRecognitionButton(
     std::unique_ptr<SearchBoxModel::SpeechButtonProperty> speech_button) {
   speech_button_ = std::move(speech_button);
   for (auto& observer : observers_)
     observer.SpeechRecognitionButtonPropChanged();
 }
@@ skipping 18 matching lines @@
 
 void SearchBoxModel::SetSelectionModel(const gfx::SelectionModel& sel) {
   if (selection_model_ == sel)
     return;
 
   selection_model_ = sel;
   for (auto& observer : observers_)
     observer.SelectionModelChanged();
 }
 
-void SearchBoxModel::SetText(const base::string16& text) {
-  if (text_ == text)
+void SearchBoxModel::Update(const base::string16& text, bool is_voice_query) {
+  if (text_ == text && is_voice_query_ == is_voice_query)
     return;
 
   // Log that a new search has been commenced whenever the text box text
   // transitions from empty to non-empty.
   if (text_.empty() && !text.empty()) {
     UMA_HISTOGRAM_ENUMERATION("Apps.AppListSearchCommenced", 1, 2);
   }
   text_ = text;
+  is_voice_query_ = is_voice_query;
   for (auto& observer : observers_)
-    observer.TextChanged();
+    observer.Update();
 }
 
 void SearchBoxModel::AddObserver(SearchBoxModelObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void SearchBoxModel::RemoveObserver(SearchBoxModelObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace app_list