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

chrome/browser/ui/app_list/search/search_controller.cc

Index: chrome/browser/ui/app_list/search/search_controller.cc
diff --git a/chrome/browser/ui/app_list/search/search_controller.cc b/chrome/browser/ui/app_list/search/search_controller.cc
index d10756a4892ea0ae8430055d4295afdcf152bc85..1da1e94972ca0c4779b3989d0cd6a5e5cb7b9b25 100644
--- a/chrome/browser/ui/app_list/search/search_controller.cc
+++ b/chrome/browser/ui/app_list/search/search_controller.cc
@@ -22,6 +22,7 @@
 #include "chrome/browser/ui/app_list/search/people/people_provider.h"
 #include "chrome/browser/ui/app_list/search/search_provider.h"
 #include "chrome/browser/ui/app_list/search/webstore/webstore_provider.h"
+#include "chrome/browser/ui/app_list/start_page_service.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/browser/user_metrics.h"
 #include "grit/generated_resources.h"
@@ -53,10 +54,20 @@ SearchController::SearchController(Profile* profile,
 SearchController::~SearchController() {}
 
 void SearchController::Init() {
+  ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
   search_box_->SetHintText(
       l10n_util::GetStringUTF16(IDS_SEARCH_BOX_HINT));
-  search_box_->SetIcon(*ui::ResourceBundle::GetSharedInstance().
-      GetImageSkiaNamed(IDR_OMNIBOX_SEARCH));
+  search_box_->SetIcon(*bundle.GetImageSkiaNamed(IDR_OMNIBOX_SEARCH));
+  if (StartPageService::Get(profile_)) {
+    search_box_->SetRightButton(scoped_ptr<SearchBoxModel::RightButtonProperty>(
+        new SearchBoxModel::RightButtonProperty(
+            // Right now provides the same image for both state.
+            // TODO(mukai, jennschen): Replace them by the real images.
+            *bundle.GetImageSkiaNamed(IDR_OMNIBOX_MIC_SEARCH),
+            *bundle.GetImageSkiaNamed(IDR_OMNIBOX_MIC_SEARCH),
+            l10n_util::GetStringUTF16(IDS_APP_LIST_START_SPEECH_RECOGNITION),
+            l10n_util::GetStringUTF16(IDS_APP_LIST_STOP_SPEECH_RECOGNITION))));
+  }
 
   mixer_->Init();