Accessibility strings for app install alerts

chrome/android/java/strings/android_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit current_release="1" latest_public_release="0">
   <outputs>
     <output filename="values-am/android_chrome_strings.xml" lang="am" type="android" />
     <output filename="values-ar/android_chrome_strings.xml" lang="ar" type="android" />
     <output filename="values-bg/android_chrome_strings.xml" lang="bg" type="android" />
     <output filename="values-ca/android_chrome_strings.xml" lang="ca" type="android" />
     <output filename="values-cs/android_chrome_strings.xml" lang="cs" type="android" />
     <output filename="values-da/android_chrome_strings.xml" lang="da" type="android" />
     <output filename="values-de/android_chrome_strings.xml" lang="de" type="android" />
@@ skipping 275 matching lines @@
       </message>
 
       <!-- App banner strings -->
       <message name="IDS_APP_BANNER_INSTALLING" desc="Button text indicating that an application is being installed.">
         Installing...
       </message>
       <message name="IDS_APP_BANNER_OPEN" desc="Text that indicates that clicking on the button will launch an application.">
         Open
       </message>
 
+      <!-- App banner accessibility strings, used for touch exploration -->
+      <message name="IDS_APP_BANNER_VIEW_ACCESSIBILITY" desc="Accessibililty text: Describes the banner content, including the app name and rating.">
+        Prompt to get app from the Google Play Store.  App name: <ph name="APP_NAME">%1$s<ex>Gmail</ex></ph>.  App average rating: <ph name="APP_RATING">%2$.1f<ex>4.2</ex></ph>.
+      </message>
+      <message name="IDS_APP_BANNER_INSTALL_ACCESSIBILITY" desc="Accessibility text: Indicates that clicking on the button will purchase the app or install it.">
+        Get app from the Google Play Store: <ph name="APP_ACTION">%s<ex>Install</ex></ph>
+      </message>
+
       <!-- DOM Distiller strings -->
       <message name="IDS_DISTILLATION_QUALITY_QUESTION" desc="Question to ask the user about whether the text from a web page was extracted correctly.">
         Was the text extracted correctly?
       </message>
       <message name="IDS_DISTILLATION_QUALITY_ANSWER_YES" desc="Text for the answering whether the text from a web page was extracted correctly and the answer is yes.">
         Yes
       </message>
       <message name="IDS_DISTILLATION_QUALITY_ANSWER_NO" desc="Text for the answering whether the text from a web page was extracted correctly and the answer is no.">
         No
       </message>
     </messages>
   </release>
 </grit>