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

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 8bd150c6cceabd2881ce2f5da833796cb6e46e5b..9041fcf7f048fff47b41f2659b84315f6dc9a551 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -15370,6 +15370,12 @@ Do you accept?
     <message name="IDS_APP_LIST_CONTACT_VIDEO_TOOLTIP" desc="Tooltip text for the 'video' icon displayed next to a contact search result.">
       Start Hangout
     </message>
+    <message name="IDS_APP_LIST_START_SPEECH_RECOGNITION" desc="Tooltip text for the button to start the speech recognition.">
+      Start speech recognition
+    </message>
+    <message name="IDS_APP_LIST_STOP_SPEECH_RECOGNITION" desc="Tooltip text for the button to stop the speech recognition.">
+      Stop speech recognition
+    </message>
     <if expr="not pp_ifdef('use_titlecase')">
       <message name="IDS_APP_LIST_CONTEXT_MENU_NEW_TAB" desc="Title text for the 'open new' context menu item of an app list item configured to open in a tab">
         New tab