Bug 864251 - Link to update history from about:support; r=adw

toolkit/content/aboutSupport.js

@@ -506,6 +506,12 @@ function openProfileDirectory() {
   new nsLocalFile(profileDir).reveal();
 }
 
+function showUpdateHistory() {
+  var prompter = Cc["@mozilla.org/updates/update-prompt;1"]
+                   .createInstance(Ci.nsIUpdatePrompt);
+  prompter.showUpdateHistory(window);
+}
+
 /**
  * Profile reset is only supported for the default profile if the appropriate migrator exists.
  */

toolkit/content/aboutSupport.xhtml

@@ -81,6 +81,18 @@
             </td>
           </tr>
 
+          <tr class="no-copy">
+            <th class="column">
+              &aboutSupport.appBasicsUpdateHistory;
+            </th>
+
+            <td>
+              <button onclick="showUpdateHistory()">
+                &aboutSupport.appBasicsShowUpdateHistory;
+              </button>
+            </td>
+          </tr>
+
           <tr>
             <th class="column">
               &aboutSupport.appBasicsUserAgent;

toolkit/locales/en-US/chrome/global/aboutSupport.dtd

@@ -21,6 +21,11 @@
 <!ENTITY aboutSupport.appBasicsName "Name">
 <!ENTITY aboutSupport.appBasicsVersion "Version">
 
+<!-- LOCALIZATION NOTE (aboutSupport.appBasicsUpdateHistory, aboutSupport.appBasicsShowUpdateHistory):
+"Update" is a noun here, not a verb. -->
+<!ENTITY aboutSupport.appBasicsUpdateHistory "Update History">
+<!ENTITY aboutSupport.appBasicsShowUpdateHistory "Show Update History">
+
 <!ENTITY aboutSupport.appBasicsProfileDir "Profile Directory">
 <!-- LOCALIZATION NOTE (aboutSupport.appBasicsProfileDirWinMac):
 This is the Windows- and Mac-specific variant of aboutSupport.appBasicsProfileDir.