Add application executable location to the about:support page.

toolkit/content/aboutSupport.js

@@ -40,6 +40,7 @@ var snapshotFormatters = {
     $("application-box").textContent = data.name;
     $("useragent-box").textContent = data.userAgent;
     $("os-box").textContent = data.osVersion;
+    $("binary-box").textContent = Services.dirsvc.get("XREExeF", Ci.nsIFile).path;
     $("supportLink").href = data.supportURL;
     let version = AppConstants.MOZ_APP_VERSION_DISPLAY;
     if (data.versionArch) {

toolkit/content/aboutSupport.xhtml

@@ -147,6 +147,15 @@
             </td>
           </tr>
 
+          <tr class="no-copy">
+            <th class="column">
+              &aboutSupport.appBasicsBinary;
+            </th>
+
+            <td id="binary-box">
+            </td>
+          </tr>
+
           <tr id="profile-row" class="no-copy">
             <th class="column">
 #ifdef XP_WIN

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

@@ -45,6 +45,7 @@ This is likely the same like id.heading in crashes.dtd. -->
 <!ENTITY aboutSupport.appBasicsUpdateHistory "Update History">
 <!ENTITY aboutSupport.appBasicsShowUpdateHistory "Show Update History">
 
+<!ENTITY aboutSupport.appBasicsBinary "Application Binary">
 <!ENTITY aboutSupport.appBasicsProfileDir "Profile Directory">
 <!-- LOCALIZATION NOTE (aboutSupport.appBasicsProfileDirWinMac):
 This is the Windows- and Mac-specific variant of aboutSupport.appBasicsProfileDir.