Remove util.boardIs and its one user.

Querying the board from the files app is only used for deciding which
Drive promo to display: specifically, whether the board is link, which
is now AUE. This is now unnecessary so remove it.

Bug: 906983
Change-Id: Ia98c9e96b81609fdacd46a4d464da18a6cbd1fdc
Reviewed-on: https://chromium-review.googlesource.com/c/1343591Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Sam McNally <sammc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609634}

chrome/app/file_manager_strings.grdp

@@ -1024,9 +1024,6 @@
   <message name="IDS_FILE_BROWSER_DRIVE_WELCOME_TITLE_ALTERNATIVE" desc="In the Welcome to Google Drive banner, title of the alternative banner offering 100GB free storage.">
     Get 100 GB free with Google Drive
   </message>
-  <message name="IDS_FILE_BROWSER_DRIVE_WELCOME_TITLE_ALTERNATIVE_1TB" desc="In the Welcome to Google Drive banner, title of the alternative banner offering 1TB free storage.">
-    Get 1 TB free with Google Drive
-  </message>
   <message name="IDS_FILE_BROWSER_DRIVE_WELCOME_TEXT_SHORT" desc="In the Welcome to Google Drive banner, text of the welcome message, short version.">
     All files saved in this folder are backed up online automatically
   </message>

chrome/browser/chromeos/extensions/file_manager/private_api_strings.cc

@@ -8,7 +8,6 @@
 #include <utility>
 
 #include "base/strings/stringprintf.h"
-#include "base/system/sys_info.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/file_manager/open_with_browser.h"
 #include "chrome/browser/chromeos/login/demo_mode/demo_session.h"
@@ -166,8 +165,6 @@ void AddStringsForDrive(base::DictionaryValue* dict) {
   SET_STRING("DRIVE_WELCOME_TITLE", IDS_FILE_BROWSER_DRIVE_WELCOME_TITLE);
   SET_STRING("DRIVE_WELCOME_TITLE_ALTERNATIVE",
              IDS_FILE_BROWSER_DRIVE_WELCOME_TITLE_ALTERNATIVE);
-  SET_STRING("DRIVE_WELCOME_TITLE_ALTERNATIVE_1TB",
-             IDS_FILE_BROWSER_DRIVE_WELCOME_TITLE_ALTERNATIVE_1TB);
   SET_STRING("SYNC_DELETE_WITHOUT_PERMISSION_ERROR",
              IDS_FILE_BROWSER_SYNC_DELETE_WITHOUT_PERMISSION_ERROR);
   SET_STRING("SYNC_FILE_NAME", IDS_FILE_BROWSER_SYNC_FILE_NAME);
@@ -852,8 +849,6 @@ ExtensionFunction::ResponseAction FileManagerPrivateGetStringsFunction::Run() {
   dict->SetBoolean(
       "MY_FILES_VOLUME_ENABLED",
       base::FeatureList::IsEnabled(chromeos::features::kMyFilesVolume));
-  dict->SetString("CHROMEOS_RELEASE_BOARD",
-                  base::SysInfo::GetLsbReleaseBoard());
   dict->SetString(
       "DOWNLOADS_LOW_SPACE_WARNING_HELP_URL",
       base::StringPrintf(kHelpURLFormat, kDownloadsLowSpaceWarningHelpNumber));

ui/file_manager/file_manager/common/js/util.js

@@ -527,24 +527,6 @@ util.AppCache.cleanup_ = function(map) {
   }
 };
 
-/**
- * Returns true if the board of the device matches the given prefix. Caution:
- * There are cases in which the name of one board is a prefix for a different
- * (only slightly related) board: E.g. daisy and daisy-spring, peach-pi and
- * peach-pit, and maybe others. See also base::GetLsbReleaseBoard().
- * @param {string} boardPrefix The board prefix to match against. (ex.
- *     "x86-mario". Prefix is used as the actual board name comes with suffix
- *     like "x86-mario-something".
- * @return {boolean} True if the board of the device matches the given prefix.
- */
-util.boardIs = function(boardPrefix) {
-  // The board name should be lower-cased, but making it case-insensitive for
-  // backward compatibility just in case.
-  var board = str('CHROMEOS_RELEASE_BOARD');
-  var pattern = new RegExp('^' + boardPrefix, 'i');
-  return board.match(pattern) != null;
-};
-
 /**
  * Adds an isFocused method to the current window object.
  */

ui/file_manager/file_manager/foreground/js/ui/banners.js

@@ -240,8 +240,6 @@ Banners.prototype.prepareAndShowWelcomeBanner_ = function(type, messageId) {
   var more;
   if (this.usePromoWelcomeBanner_) {
     var welcomeTitle = str('DRIVE_WELCOME_TITLE_ALTERNATIVE');
-    if (util.boardIs('link'))
-      welcomeTitle = str('DRIVE_WELCOME_TITLE_ALTERNATIVE_1TB');
     title.textContent = welcomeTitle;
     more = util.createChild(links, '', 'a');
     more.href = str('GOOGLE_DRIVE_REDEEM_URL');
@@ -388,15 +386,9 @@ Banners.prototype.checkSpaceAndMaybeShowWelcomeBanner_ = function() {
       this.usePromoWelcomeBanner_ = false;
     }
 
-    // Choose the offer basing on the board name. The default one is 100 GB.
     var offerSize = 100;  // In GB.
     var offerServiceId = 'drive.cros.echo.1';
 
-    if (util.boardIs('link')) {
-      offerSize = 1024;  // 1 TB.
-      offerServiceId = 'drive.cros.echo.2';
-    }
-
     // Perform asynchronous tasks in parallel.
     var group = new AsyncUtil.Group();
 

ui/file_manager/file_manager/test/js/strings.js

@@ -9,7 +9,6 @@ loadTimeData.data = $GRDP;
 
 // Extend with additional fields not found in grdp files.
 Object.setPrototypeOf(loadTimeData.data_, {
-  'CHROMEOS_RELEASE_BOARD': 'unknown',
   'CROSTINI_FILES_ENABLED': true,
   'DRIVE_FS_ENABLED': false,
   'GOOGLE_DRIVE_REDEEM_URL': 'http://www.google.com/intl/en/chrome/devices' +