Add setVoiceSearchSupported to the searchbox API. This will be used to determine whether to show a …

chrome/browser/ui/search/search_model.cc

Index: chrome/browser/ui/search/search_model.cc
diff --git a/chrome/browser/ui/search/search_model.cc b/chrome/browser/ui/search/search_model.cc
index 53d0fcc9efd245bd685085d5c55051b98176cf6e..87c1303c57ae2f200b8cc5433fa28d60606bbe91 100644
--- a/chrome/browser/ui/search/search_model.cc
+++ b/chrome/browser/ui/search/search_model.cc
@@ -7,6 +7,25 @@
 #include "chrome/browser/search/search.h"
 #include "chrome/browser/ui/search/search_model_observer.h"
 
+SearchModel::State::State()
+    : top_bars_visible(true),
+      voice_search_supported(false) {
+}
+
+SearchModel::State::State(const SearchMode& mode,
+                          bool top_bars_visible,
+                          bool voice_search_supported)
+    : mode(mode),
+      top_bars_visible(top_bars_visible),
+      voice_search_supported(voice_search_supported) {
+}
+
+bool SearchModel::State::operator==(const State& rhs) const {
+  return mode == rhs.mode && top_bars_visible == rhs.top_bars_visible &&
+      voice_search_supported == rhs.voice_search_supported;
+}
+
+
 SearchModel::SearchModel() {
 }
 
@@ -64,7 +83,7 @@ void SearchModel::SetMode(const SearchMode& new_mode) {
 
 void SearchModel::SetTopBarsVisible(bool visible) {
   DCHECK(chrome::IsInstantExtendedAPIEnabled())
-      << "Please do not try to set the SearchModel mode without first "
+      << "Please do not try to set the SearchModel state without first "
       << "checking if Search is enabled.";
 
   if (state_.top_bars_visible == visible)
@@ -77,6 +96,21 @@ void SearchModel::SetTopBarsVisible(bool visible) {
                     ModelChanged(old_state, state_));
 }
 
+void SearchModel::SetVoiceSearchSupported(bool supported) {
+  DCHECK(chrome::IsInstantExtendedAPIEnabled())
+      << "Please do not try to set the SearchModel state without first "
+      << "checking if Search is enabled.";
+
+  if (state_.voice_search_supported == supported)
+    return;
+
+  const State old_state = state_;
+  state_.voice_search_supported = supported;
+
+  FOR_EACH_OBSERVER(SearchModelObserver, observers_,
+                    ModelChanged(old_state, state_));
+}
+
 void SearchModel::AddObserver(SearchModelObserver* observer) {
   observers_.AddObserver(observer);
 }