Adds the speech recognition button to the app-list searchbox.

chrome/browser/ui/app_list/start_page_service.cc

Index: chrome/browser/ui/app_list/start_page_service.cc
diff --git a/chrome/browser/ui/app_list/start_page_service.cc b/chrome/browser/ui/app_list/start_page_service.cc
index 8a4f444792181d355f5f22d7ba423172f3273959..c4f4adcd180ddceda0611a8fd514103ffd9faa21 100644
--- a/chrome/browser/ui/app_list/start_page_service.cc
+++ b/chrome/browser/ui/app_list/start_page_service.cc
@@ -149,10 +149,21 @@ void StartPageService::RemoveObserver(StartPageObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
+void StartPageService::ToggleSpeechRecognition() {
+  contents_->GetWebUI()->CallJavascriptFunction(
+      "appList.startPage.toggleSpeechRecognition");
+}
+
 void StartPageService::OnSearch(const base::string16& query) {
   FOR_EACH_OBSERVER(StartPageObserver, observers_, OnSearch(query));
 }
 
+void StartPageService::OnSpeechRecognitionStateChanged(bool recognizing) {
+  FOR_EACH_OBSERVER(StartPageObserver,
+                    observers_,
+                    OnSpeechRecognitionStateChanged(recognizing));
+}
+
 void StartPageService::Shutdown() {
   contents_.reset();
 }