1 files changed, 5 insertions, 22 deletions
diff --git a/application/palemoon/base/content/browser.js b/application/palemoon/base/content/browser.js
index 8b3fa0b4f..981ab5f0f 100644
--- a/application/palemoon/base/content/browser.js
+++ b/application/palemoon/base/content/browser.js
@@ -65,6 +65,9 @@ XPCOMUtils.defineLazyGetter(window, "gFindBar", function() {
   return findbar;
 });
 
+XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
+  "resource://gre/modules/BrowserUtils.jsm");
+
 XPCOMUtils.defineLazyGetter(this, "gPrefService", function() {
   return Services.prefs;
 });
@@ -3426,26 +3429,6 @@ function updateCharacterEncodingMenuState()
   }
 }
 
-/**
- * Returns true if |aMimeType| is text-based, false otherwise.
- *
- * @param aMimeType
- *        The MIME type to check.
- *
- * If adding types to this function, please also check the similar
- * function in findbar.xml
- */
-function mimeTypeIsTextBased(aMimeType)
-{
-  return aMimeType.startsWith("text/") ||
-         aMimeType.endsWith("+xml") ||
-         aMimeType == "application/x-javascript" ||
-         aMimeType == "application/javascript" ||
-         aMimeType == "application/json" ||
-         aMimeType == "application/xml" ||
-         aMimeType == "mozilla.application/cached-xul";
-}
-
 var XULBrowserWindow = {
   // Stored Status, Link and Loading values
   status: "",
@@ -3669,7 +3652,7 @@ var XULBrowserWindow = {
         this.setDefaultStatus(msg);
 
         // Disable menu entries for images, enable otherwise
-        if (!gMultiProcessBrowser && content.document && mimeTypeIsTextBased(content.document.contentType))
+        if (!gMultiProcessBrowser && content.document && BrowserUtils.mimeTypeIsTextBased(content.document.contentType))
           this.isImage.removeAttribute('disabled');
         else
           this.isImage.setAttribute('disabled', 'true');
@@ -3717,7 +3700,7 @@ var XULBrowserWindow = {
     }
 
     // Disable menu entries for images, enable otherwise
-    if (!gMultiProcessBrowser && content.document && mimeTypeIsTextBased(content.document.contentType))
+    if (!gMultiProcessBrowser && content.document && BrowserUtils.mimeTypeIsTextBased(content.document.contentType))
       this.isImage.removeAttribute('disabled');
     else
       this.isImage.setAttribute('disabled', 'true');