DevTools: fix Ctrl-Plus/Ctrl-Minus shortcuts for zooming in hosted mode

Source/devtools/front_end/host/InspectorFrontendHost.js

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 278 matching lines @@
 
     /**
      * @return {boolean}
      */
     isHostedMode: function() { }
 }
 
 /**
  * @constructor
  * @implements {InspectorFrontendHostAPI}
+ * @suppressGlobalPropertiesCheck
  */
 WebInspector.InspectorFrontendHostStub = function()
 {
+    /**
+     * @param {!Event} event
+     */
+    function stopEventPropagation(event)
+    {
+        // Let browser handle Ctrl+/Ctrl- shortcuts in hosted mode.
+        if (event.ctrlKey && (event.keyCode === 187 || event.keyCode === 189))
+            event.stopPropagation();
+    }
+    document.addEventListener("keydown", stopEventPropagation, true);
 }
 
 WebInspector.InspectorFrontendHostStub.prototype = {
     /**
      * @return {string}
      */
     getSelectionBackgroundColor: function()
     {
         return "#6e86ff";
     },
@@ skipping 378 matching lines @@
      * @param {number} id
      * @param {?string} error
      */
     embedderMessageAck: function(id, error)
     {
         InspectorFrontendHost["embedderMessageAck"](id, error);
     }
 }
 
 var InspectorFrontendAPI = new InspectorFrontendAPIImpl();