[DevTools] Fix location.script().sourceURL

Script can be null.

BUG=607532
R=lushnikov@chromium.org

Review-Url: https://codereview.chromium.org/2198443004
Cr-Commit-Position: refs/heads/master@{#408843}

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

@@ -85,9 +85,12 @@ WebInspector.BlackboxManager.prototype = {
      */
     isBlackboxedRawLocation: function(location)
     {
-        var positions = this._scriptPositions(location.script());
+        var script = location.script();
+        if (!script)
+            return false;
+        var positions = this._scriptPositions(script);
         if (!positions)
-            return this._isBlackboxedScript(location.script());
+            return this._isBlackboxedScript(script);
         var index = positions.lowerBound(location, comparator);
         return !!(index % 2);
 

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

@@ -110,7 +110,10 @@ WebInspector.CompilerScriptMapping.prototype = {
         var entry = sourceMap.findEntry(lineNumber, columnNumber);
         if (!entry || !entry.sourceURL)
             return null;
-        var uiSourceCode = this._networkMapping.uiSourceCodeForScriptURL(/** @type {string} */ (entry.sourceURL), rawLocation.script());
+        var script = rawLocation.script();
+        if (!script)
+            return null;
+        var uiSourceCode = this._networkMapping.uiSourceCodeForScriptURL(/** @type {string} */ (entry.sourceURL), script);
         if (!uiSourceCode)
             return null;
         return uiSourceCode.uiLocation(/** @type {number} */ (entry.sourceLineNumber), /** @type {number} */ (entry.sourceColumnNumber));

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

@@ -157,7 +157,7 @@ WebInspector.DebuggerWorkspaceBinding.prototype = {
     createCallFrameLiveLocation: function(location, updateDelegate, locationPool)
     {
         var target = location.target();
-        this._ensureInfoForScript(location.script());
+        this._ensureInfoForScript(/** @type {!WebInspector.Script} */(location.script()));
         var liveLocation = this.createLiveLocation(location, updateDelegate, locationPool);
         this._registerCallFrameLiveLocation(target, liveLocation);
         return liveLocation;

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

@@ -64,6 +64,8 @@ WebInspector.ResourceScriptMapping.prototype = {
     {
         var debuggerModelLocation = /** @type {!WebInspector.DebuggerModel.Location} */ (rawLocation);
         var script = debuggerModelLocation.script();
+        if (!script)
+            return null;
         var uiSourceCode = this._workspaceUISourceCodeForScript(script);
         if (!uiSourceCode)
             return null;

third_party/WebKit/Source/devtools/front_end/sdk/DebuggerModel.js

@@ -337,7 +337,7 @@ WebInspector.DebuggerModel.prototype = {
 
     /**
      * @param {!RuntimeAgent.ScriptId} scriptId
-     * @return {!WebInspector.Script}
+     * @return {?WebInspector.Script}
      */
     scriptForId: function(scriptId)
     {
@@ -933,7 +933,7 @@ WebInspector.DebuggerModel.Location.prototype = {
     },
 
     /**
-     * @return {!WebInspector.Script}
+     * @return {?WebInspector.Script}
      */
     script: function()
     {

third_party/WebKit/Source/devtools/front_end/snippets/ScriptSnippetModel.js

@@ -248,7 +248,8 @@ WebInspector.ScriptSnippetModel.prototype = {
             if (mapping.evaluationIndex(uiSourceCode) !== evaluationIndex)
                 return;
 
-            mapping._addScript(executionContext.debuggerModel.scriptForId(scriptId || exceptionDetails.scriptId), uiSourceCode);
+            var script = /** @type {!WebInspector.Script} */(executionContext.debuggerModel.scriptForId(scriptId || exceptionDetails.scriptId));
+            mapping._addScript(script, uiSourceCode);
             if (!scriptId) {
                 this._printRunOrCompileScriptResultFailure(target, exceptionDetails, evaluationUrl);
                 return;

third_party/WebKit/Source/devtools/front_end/sources/CallStackSidebarPane.js

@@ -447,7 +447,8 @@ WebInspector.CallStackSidebarPane.CallFrame = function(functionName, location, l
     this._asyncCallFrame = asyncCallFrame;
 
     if (asyncCallFrame) {
-        var locationElement = linkifier.linkifyRawLocation(location, location.script().sourceURL);
+        var script = location.script();
+        var locationElement = linkifier.linkifyRawLocation(location, script ? script.sourceURL : "");
         this.subtitleElement.appendChild(locationElement);
     } else {
         this._liveLocationPool = new WebInspector.LiveLocationPool();

third_party/WebKit/Source/devtools/front_end/sources/ScriptFormatterEditorAction.js

@@ -24,6 +24,8 @@ WebInspector.FormatterScriptMapping.prototype = {
     {
         var debuggerModelLocation = /** @type {!WebInspector.DebuggerModel.Location} */ (rawLocation);
         var script = debuggerModelLocation.script();
+        if (!script)
+            return null;
         var uiSourceCode = this._editorAction._uiSourceCodes.get(script);
         if (!uiSourceCode)
             return null;

third_party/WebKit/Source/devtools/front_end/sources/SourceMapNamesResolver.js

@@ -263,6 +263,8 @@ WebInspector.SourceMapNamesResolver._resolveExpression = function(callFrame, uiS
         return Promise.resolve("");
 
     var script = rawLocation.script();
+    if (!script)
+        return Promise.resolve("");
     var sourceMap = WebInspector.debuggerWorkspaceBinding.sourceMapForScript(script);
     if (!sourceMap)
         return Promise.resolve("");