Revert of [DevTools] Remove edited scripts from debugger agent, move knowledge to frontend.

Source/devtools/front_end/bindings/NetworkProject.js

Index: Source/devtools/front_end/bindings/NetworkProject.js
diff --git a/Source/devtools/front_end/bindings/NetworkProject.js b/Source/devtools/front_end/bindings/NetworkProject.js
index 09f14624f8a558916cc95a56ec6391acb51f9bc7..33364e77c63400490bb9d0ee2f4217dac6eea841 100644
--- a/Source/devtools/front_end/bindings/NetworkProject.js
+++ b/Source/devtools/front_end/bindings/NetworkProject.js
@@ -156,6 +156,7 @@
     this._processedURLs = {};
     target[WebInspector.NetworkProject._networkProjectSymbol] = this;
 
+    target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.ResourceAdded, this._resourceAdded, this);
     target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.MainFrameNavigated, this._mainFrameNavigated, this);
 
     var debuggerModel = WebInspector.DebuggerModel.fromTarget(target);
@@ -168,11 +169,6 @@
         cssModel.addEventListener(WebInspector.CSSStyleModel.Events.StyleSheetAdded, this._styleSheetAdded, this);
         cssModel.addEventListener(WebInspector.CSSStyleModel.Events.StyleSheetRemoved, this._styleSheetRemoved, this);
     }
-
-    if (debuggerModel && !debuggerModel.debuggerEnabled())
-        debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.DebuggerWasEnabled, this._debuggerEnabled, this);
-    else
-        this._debuggerEnabled();
 }
 
 WebInspector.NetworkProject._networkProjectSymbol = Symbol("networkProject");
@@ -278,15 +274,6 @@
         projectDelegate.removeFile(path);
     },
 
-    _debuggerEnabled: function()
-    {
-        var debuggerModel = WebInspector.DebuggerModel.fromTarget(this.target());
-        if (debuggerModel)
-            debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.DebuggerWasEnabled, this._debuggerEnabled, this);
-        this._populate();
-        this.target().resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.ResourceAdded, this._resourceAdded, this);
-    },
-
     _populate: function()
     {
         /**
@@ -406,7 +393,6 @@
         target.resourceTreeModel.removeEventListener(WebInspector.ResourceTreeModel.EventTypes.MainFrameNavigated, this._mainFrameNavigated, this);
         var debuggerModel = WebInspector.DebuggerModel.fromTarget(target);
         if (debuggerModel) {
-            debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.DebuggerWasEnabled, this._debuggerEnabled, this);
             debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.ParsedScriptSource, this._parsedScriptSource, this);
             debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.FailedToParseScriptSource, this._parsedScriptSource, this);
         }
@@ -465,48 +451,46 @@
     requestContent: function(callback)
     {
         /**
-         * @param {!WebInspector.Target} target
-         * @param {string} url
-         * @return {!Array.<!WebInspector.Script>}
+         * @this {WebInspector.NetworkProject.FallbackResource}
          */
-        function findScripts(target, url)
+        function loadFallbackContent()
         {
-            var debuggerModel = WebInspector.DebuggerModel.fromTarget(target);
-            return debuggerModel ? debuggerModel.scriptsForSourceURL(url) : [];
+            var debuggerModel = WebInspector.DebuggerModel.fromTarget(this._resource.target());
+            if (!debuggerModel) {
+                callback(null);
+                return;
+            }
+            var scripts = debuggerModel.scriptsForSourceURL(this._resource.url);
+            if (!scripts.length) {
+                callback(null);
+                return;
+            }
+
+            var contentProvider;
+            var type = this._resource.resourceType();
+            if (type === WebInspector.resourceTypes.Document)
+                contentProvider = new WebInspector.ConcatenatedScriptsContentProvider(scripts);
+            else if (type === WebInspector.resourceTypes.Script)
+                contentProvider = scripts[0];
+
+            console.assert(contentProvider, "Resource content request failed. " + this._resource.url);
+
+            contentProvider.requestContent(callback);
         }
 
         /**
          * @param {?string} content
          * @this {WebInspector.NetworkProject.FallbackResource}
          */
-        function loadFallbackContent(content)
+        function requestContentLoaded(content)
         {
-            if (content) {
-                callback(content);
-                return;
-            }
-
-            if (this._resource.resourceType() !== WebInspector.resourceTypes.Document) {
-                callback(null);
-                return;
-            }
-
-            var scripts = findScripts(this._resource.target(), this._resource.url);
-            if (scripts.length)
-                new WebInspector.ConcatenatedScriptsContentProvider(scripts).requestContent(callback);
+            if (content)
+                callback(content)
             else
-                callback(null);
-        }
-
-        if (this._resource.resourceType() === WebInspector.resourceTypes.Script) {
-            var scripts = findScripts(this._resource.target(), this._resource.url);
-            if (scripts.length) {
-                scripts[0].requestContent(callback);
-                return;
-            }
-        }
-
-        this._resource.requestContent(loadFallbackContent.bind(this));
+                loadFallbackContent.call(this);
+        }
+
+        this._resource.requestContent(requestContentLoaded.bind(this));
     },
 
     /**