DevTools: Fix presubmits failing on InspectorFrontendHostAPI

third_party/WebKit/Source/devtools/front_end/host/InspectorFrontendHost.js

Index: third_party/WebKit/Source/devtools/front_end/host/InspectorFrontendHost.js
diff --git a/third_party/WebKit/Source/devtools/front_end/host/InspectorFrontendHost.js b/third_party/WebKit/Source/devtools/front_end/host/InspectorFrontendHost.js
index fb17722e447e65aeebede7aef31f5979e108a44a..8acac08648a1363f774bb89bdb096f150a20fbc4 100644
--- a/third_party/WebKit/Source/devtools/front_end/host/InspectorFrontendHost.js
+++ b/third_party/WebKit/Source/devtools/front_end/host/InspectorFrontendHost.js
@@ -449,15 +449,15 @@ WebInspector.InspectorFrontendHostStub.prototype = {
 /**
  * @type {!InspectorFrontendHostAPI}
  */
-window.InspectorFrontendHost = window.InspectorFrontendHost || null;
-
+var InspectorFrontendHost = window.InspectorFrontendHost || null;
+window.InspectorFrontendHost = InspectorFrontendHost;
 (function(){
 
     function initializeInspectorFrontendHost()
     {
         if (!InspectorFrontendHost) {
             // Instantiate stub for web-hosted mode if necessary.
-            InspectorFrontendHost = new WebInspector.InspectorFrontendHostStub();
+            window.InspectorFrontendHost = InspectorFrontendHost = new WebInspector.InspectorFrontendHostStub();
         } else {
             // Otherwise add stubs for missing methods that are declared in the interface.
             var proto = WebInspector.InspectorFrontendHostStub.prototype;