Enable side-by-side beta and dev channels.

chrome/app/chromium_strings.grd

Index: chrome/app/chromium_strings.grd
diff --git a/chrome/app/chromium_strings.grd b/chrome/app/chromium_strings.grd
index cadacb51e4e4263697079fda3d5fcb66f3f534be..acfdf5a738d9f71a0cd05107e859e749dd94cece 100644
--- a/chrome/app/chromium_strings.grd
+++ b/chrome/app/chromium_strings.grd
@@ -136,7 +136,13 @@ If you update this file, be sure also to update google_chrome_strings.grd. -->
         Chromium
       </message>
       <if expr="is_win">
-        <message name="IDS_SXS_SHORTCUT_NAME" desc="The Chrome short cut name for SxS channel">
+        <message name="IDS_SXS_SHORTCUT_NAME" desc="The Chrome shortcut name for canary channel">
+          Chromium
+        </message>
+        <message name="IDS_SHORTCUT_NAME_BETA" desc="The Chrome shortcut name for beta channel" translateable="false">
+          Chromium
+        </message>
+        <message name="IDS_SHORTCUT_NAME_DEV" desc="The Chrome shortcut name for dev channel" translateable="false">
           Chromium
         </message>
         <message name="IDS_PRODUCT_DESCRIPTION" desc="Browser description">
@@ -859,6 +865,14 @@ Signing in anyway will merge Chromium information like bookmarks, history, and o
       <message name="IDS_APP_SHORTCUTS_SUBDIR_NAME_CANARY" desc="Name for the Chrome Apps Start Menu folder name.">
         Chromium Apps
       </message>
+      <if expr="is_win">
+        <message name="IDS_APP_SHORTCUTS_SUBDIR_NAME_BETA" desc="Name for the Chrome Apps Start Menu folder name." translateable="false">
+          Chromium Apps
+        </message>
+        <message name="IDS_APP_SHORTCUTS_SUBDIR_NAME_DEV" desc="Name for the Chrome Apps Start Menu folder name." translateable="false">
+          Chromium Apps

[robertshield, 2017/04/05 21:29:37]

Is it ok that all of these have the same name? 

[grt (UTC plus 2), 2017/04/20 13:53:04]

SxS/canary, dev, and beta do not exist for Chromium. Historically, we've needed
bogus strings in the chromium .grd file for them anyway. Now, however, I think
it's possible to drop that since the constants won't be used in Chromium builds.
Let me see what I can do about this.

+        </message>
+      </if>
 
       <!-- Chrome Conflicts bubble -->
       <if expr="is_win">
@@ -997,15 +1011,27 @@ Please check your email at <ph name="ACCOUNT_EMAIL">$2<ex>jane.doe@example.com</
         <message name="IDS_INBOUND_MDNS_RULE_NAME" desc="The name of the firewall rule allowing inbound mDNS traffic.">
           Chromium (mDNS-In)
         </message>
+        <message name="IDS_INBOUND_MDNS_RULE_NAME_BETA" desc="The name of the firewall rule allowing inbound mDNS traffic for beta." translateable="false">
+          Chromium (mDNS-In)
+        </message>
         <message name="IDS_INBOUND_MDNS_RULE_NAME_CANARY" desc="The name of the firewall rule allowing inbound mDNS traffic for canary.">
           Chromium (mDNS-In)
         </message>
+        <message name="IDS_INBOUND_MDNS_RULE_NAME_DEV" desc="The name of the firewall rule allowing inbound mDNS traffic for dev." translateable="false">
+          Chromium (mDNS-In)
+        </message>
         <message name="IDS_INBOUND_MDNS_RULE_DESCRIPTION" desc="The description of the firewall rule allowing inbound mDNS traffic.">
           Inbound rule for Chromium to allow mDNS traffic.
         </message>
+        <message name="IDS_INBOUND_MDNS_RULE_DESCRIPTION_BETA" desc="The description of the firewall rule allowing inbound mDNS traffic beta." translateable="false">
+          Inbound rule for Chromium to allow mDNS traffic.
+        </message>
         <message name="IDS_INBOUND_MDNS_RULE_DESCRIPTION_CANARY" desc="The description of the firewall rule allowing inbound mDNS traffic canary.">
           Inbound rule for Chromium to allow mDNS traffic.
         </message>
+        <message name="IDS_INBOUND_MDNS_RULE_DESCRIPTION_DEV" desc="The description of the firewall rule allowing inbound mDNS traffic dev." translateable="false">
+          Inbound rule for Chromium to allow mDNS traffic.
+        </message>
       </if>
 
       <if expr="not is_android">