Update CRD App Store metadata text

* Update the character limit.
* Add the promotion text, which will be shown just below the app title
  on App Store. For example:
  https://drive.google.com/file/d/1dpHERWFhUkv7LSs-Mqxq7HmizDxMNiCV/view?usp=sharing

Bug: 756208
Change-Id: Ic8d6b23d2c292772c9ad7b5d928d3cb000ed98b4
Reviewed-on: https://chromium-review.googlesource.com/905504
Commit-Queue: Yuwei Huang <yuweih@chromium.org>
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#534863}

remoting/resources/remoting_strings.grd

@@ -675,9 +675,12 @@ For information about privacy, please see the Google Privacy Policy (http://goo.
         </message>
 
         <!-- iOS App Store metadata text. Won't be bundled into the app. -->
-        <message name="IDS_APP_STORE_TITLE" desc="App Store title of the Chrome Remote Desktop app for iOS. If needed to meet the 30-char limit, please translate just 'Remote Desktop' instead. [CHAR-LIMIT=30] [NAME=app_store_title]" meaning="Title used in App Store">
+        <message name="IDS_APP_STORE_TITLE" desc="App Store title of the Chrome Remote Desktop app for iOS. If needed to meet the 50-char limit, please translate just 'Remote Desktop' instead. [CHAR-LIMIT=50] [NAME=app_store_title]" meaning="Title used in App Store">
           Chrome Remote Desktop
         </message>
+        <message name="IDS_APP_STORE_PROMOTIONAL_TEXT" desc="App Store promotional text. To be displayed below the app title in App Store. No period at the end. [CHAR-LIMIT=170]">
+          Securely access your computer
+        </message>
         <message name="IDS_APP_STORE_KEYWORDS" desc="App Store keywords (to be used to search for the app) for the Chrome Remote Desktop app for iOS. Separate keywords with newline. [NAME=app_store_keywords]">
 Chrome
 Remote
@@ -694,7 +697,7 @@ Securely access your computer from your iOS device. It's fast, simple and free.
 • Install Chrome Remote Desktop software and follow the instructions to complete setup.
 • On your iOS device, open the app and tap on any of your online computers to connect.
         </message>
-        <message name="IDS_APP_STORE_CHANGES" desc="List of what's changed in this release of Chrome Remote Desktop for iOS. [CHAR-LIMIT=500] [NAME=app_store_changes]">
+        <message name="IDS_APP_STORE_CHANGES" desc="List of what's changed in this release of Chrome Remote Desktop for iOS. [CHAR-LIMIT=4000] [NAME=app_store_changes]">
 • New look and feel.
 • Improved performance, responsiveness and reliability.
 • Support for playing audio from Windows or Linux computers.