Web MIDI API: disallow to add custom exceptions on content settings UI

chrome/browser/resources/options/content_settings_exceptions_area.js

Index: chrome/browser/resources/options/content_settings_exceptions_area.js
diff --git a/chrome/browser/resources/options/content_settings_exceptions_area.js b/chrome/browser/resources/options/content_settings_exceptions_area.js
index 12004a53efdaf3658adecae84492dbefeb1a3c32..f2ec4c3457c5292ed744a065427c04f713c4e5e8 100644
--- a/chrome/browser/resources/options/content_settings_exceptions_area.js
+++ b/chrome/browser/resources/options/content_settings_exceptions_area.js
@@ -152,11 +152,12 @@ cr.define('options.contentSettings', function() {
 
       this.updateEditables();
 
-      // Editing notifications, geolocation and media-stream is disabled for
-      // now.
+      // Editing notifications, geolocation, media-stream, and midi-sysex is
+      // disabled for now.
       if (this.contentType == 'notifications' ||
           this.contentType == 'location' ||
-          this.contentType == 'media-stream') {
+          this.contentType == 'media-stream' ||
+          this.contentType == 'midi-sysex') {

[Dan Beam, 2015/03/30 22:10:27]

any idea why zoomlevels isn't in this list?  if it was, we could just say:

  this.editable = this.isEditable();

or something

         this.editable = false;
       }
 
@@ -544,6 +545,7 @@ cr.define('options.contentSettings', function() {
                this.contentType == 'location' ||
                this.contentType == 'fullscreen' ||
                this.contentType == 'media-stream' ||
+               this.contentType == 'midi-sysex' ||
                this.contentType == 'zoomlevels');
     },