DevTools: introduce persistence/ module

third_party/WebKit/Source/devtools/front_end/bindings/NetworkProject.js

Index: third_party/WebKit/Source/devtools/front_end/bindings/NetworkProject.js
diff --git a/third_party/WebKit/Source/devtools/front_end/bindings/NetworkProject.js b/third_party/WebKit/Source/devtools/front_end/bindings/NetworkProject.js
index 71d5547e59a9dc8d4098047bd335072f5c2b5031..e2a6aa403d172774e98f215375a170276975560e 100644
--- a/third_party/WebKit/Source/devtools/front_end/bindings/NetworkProject.js
+++ b/third_party/WebKit/Source/devtools/front_end/bindings/NetworkProject.js
@@ -202,13 +202,12 @@ WebInspector.NetworkProject.prototype = {
      * @param {!WebInspector.ContentProvider} contentProvider
      * @param {?WebInspector.ResourceTreeFrame} frame
      * @param {boolean=} isContentScript
-     * @return {?WebInspector.UISourceCode}
+     * @return {!WebInspector.UISourceCode}
      */
     addFile: function(contentProvider, frame, isContentScript)
     {
         var uiSourceCode = this._createFile(contentProvider, frame, isContentScript || false);
-        if (uiSourceCode)
-            this._addUISourceCodeWithProvider(uiSourceCode, contentProvider);
+        this._addUISourceCodeWithProvider(uiSourceCode, contentProvider);
         return uiSourceCode;
     },
 
@@ -270,10 +269,8 @@ WebInspector.NetworkProject.prototype = {
                 return;
         }
         var uiSourceCode = this._createFile(script, WebInspector.ResourceTreeFrame.fromScript(script), script.isContentScript());
-        if (uiSourceCode) {
-            uiSourceCode[WebInspector.NetworkProject._scriptSymbol] = script;
-            this._addUISourceCodeWithProvider(uiSourceCode, script);
-        }
+        uiSourceCode[WebInspector.NetworkProject._scriptSymbol] = script;
+        this._addUISourceCodeWithProvider(uiSourceCode, script);
     },
 
     /**
@@ -287,10 +284,8 @@ WebInspector.NetworkProject.prototype = {
 
         var originalContentProvider = header.originalContentProvider();
         var uiSourceCode = this._createFile(originalContentProvider, WebInspector.ResourceTreeFrame.fromStyleSheet(header), false);
-        if (uiSourceCode) {
-            uiSourceCode[WebInspector.NetworkProject._styleSheetSymbol] = header;
-            this._addUISourceCodeWithProvider(uiSourceCode, originalContentProvider);
-        }
+        uiSourceCode[WebInspector.NetworkProject._styleSheetSymbol] = header;
+        this._addUISourceCodeWithProvider(uiSourceCode, originalContentProvider);
     },
 
     /**
@@ -341,10 +336,8 @@ WebInspector.NetworkProject.prototype = {
             return;
 
         var uiSourceCode = this._createFile(resource, WebInspector.ResourceTreeFrame.fromResource(resource), false);
-        if (uiSourceCode) {
-            uiSourceCode[WebInspector.NetworkProject._resourceSymbol] = resource;
-            this._addUISourceCodeWithProvider(uiSourceCode, resource);
-        }
+        uiSourceCode[WebInspector.NetworkProject._resourceSymbol] = resource;
+        this._addUISourceCodeWithProvider(uiSourceCode, resource);
     },
 
     /**
@@ -382,14 +375,11 @@ WebInspector.NetworkProject.prototype = {
      * @param {!WebInspector.ContentProvider} contentProvider
      * @param {?WebInspector.ResourceTreeFrame} frame
      * @param {boolean} isContentScript
-     * @return {?WebInspector.UISourceCode}
+     * @return {!WebInspector.UISourceCode}
      */
     _createFile: function(contentProvider, frame, isContentScript)
     {
         var url = contentProvider.contentURL();
-        if (this._networkMapping.hasMappingForNetworkURL(url))
-            return null;
-
         var project = this._workspaceProject(frame, isContentScript);
         var uiSourceCode = project.createUISourceCode(url, contentProvider.contentType());
         uiSourceCode[WebInspector.NetworkProject._targetSymbol] = this.target();