Add missing string to Google Chrome builds.

This string was added to chromium_strings.grd in r515542, but was
accidentally left out of google_chrome_strings.grd.

BUG=None
R=finnur@chromium.org

Change-Id: I9d5054121f729fb96c973b47b62e09db6147b6bd
Reviewed-on: https://chromium-review.googlesource.com/925265Reviewed-by: Finnur Thorarinsson <finnur@chromium.org>
Commit-Queue: Greg Thompson <grt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537644}

chrome/app/google_chrome_strings.grd

@@ -1238,6 +1238,13 @@ Please check your email at <ph name="ACCOUNT_EMAIL">$2<ex>jane.doe@example.com</
           Click <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>Switch anyway<ph name="END_BOLD">&lt;/strong&gt;</ph>, if it appears
         </message>
       </if>
+
+      <!-- Native notifications for Windows 10 -->
+      <if expr="is_win">
+        <message name="IDS_WIN_NOTIFICATION_SETTINGS_CONTEXT_MENU_ITEM_NAME" desc="The name of the button in Windows Notification Center which leads to Chrome notification settings.">
+          Go to Chrome notification settings
+        </message>
+      </if>
     </messages>
   </release>
 </grit>