DevTools: remove "type" getters in Resource and NetworkRequest.

Source/devtools/front_end/network/RequestPreviewView.js

Index: Source/devtools/front_end/network/RequestPreviewView.js
diff --git a/Source/devtools/front_end/network/RequestPreviewView.js b/Source/devtools/front_end/network/RequestPreviewView.js
index 86819997269e121fa93d72c3f8dcafe7ce3957af..22227ffc3f8864d41bcf039fea4ac84eb546b49f 100644
--- a/Source/devtools/front_end/network/RequestPreviewView.js
+++ b/Source/devtools/front_end/network/RequestPreviewView.js
@@ -122,7 +122,7 @@ WebInspector.RequestPreviewView.prototype = {
                 return htmlErrorPreview;
         }
 
-        if (this.request.type === WebInspector.resourceTypes.XHR) {
+        if (this.request.resourceType() === WebInspector.resourceTypes.XHR) {
             var jsonView = this._jsonView();
             if (jsonView)
                 return jsonView;
@@ -134,7 +134,7 @@ WebInspector.RequestPreviewView.prototype = {
         if (this._responseView.sourceView)
             return this._responseView.sourceView;
 
-        if (this.request.type === WebInspector.resourceTypes.Other)
+        if (this.request.resourceType() === WebInspector.resourceTypes.Other)
             return this._createEmptyView();
 
         return WebInspector.RequestView.nonSourceViewForRequest(this.request);