DevTools: make StylesSourceMapping in charge of creating and removing UISourceCodes

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

Index: third_party/WebKit/Source/devtools/front_end/bindings/CSSWorkspaceBinding.js
diff --git a/third_party/WebKit/Source/devtools/front_end/bindings/CSSWorkspaceBinding.js b/third_party/WebKit/Source/devtools/front_end/bindings/CSSWorkspaceBinding.js
index 620a238a5a48a276a491d2fe13a655aa5bdfd77e..4f48255e04cf4a756dc6445270a672ac03be95fd 100644
--- a/third_party/WebKit/Source/devtools/front_end/bindings/CSSWorkspaceBinding.js
+++ b/third_party/WebKit/Source/devtools/front_end/bindings/CSSWorkspaceBinding.js
@@ -98,9 +98,10 @@ Bindings.CSSWorkspaceBinding.ModelInfo = class {
       cssModel.addEventListener(SDK.CSSModel.Events.StyleSheetRemoved, this._styleSheetRemoved, this)
     ];
 
+    this._workspace = workspace;
+    var networkProject = Bindings.NetworkProject.forTarget(cssModel.target());
     this._stylesSourceMapping = new Bindings.StylesSourceMapping(cssModel, workspace);
-    this._sassSourceMapping =
-        new Bindings.SASSSourceMapping(cssModel, workspace, Bindings.NetworkProject.forTarget(cssModel.target()));
+    this._sassSourceMapping = new Bindings.SASSSourceMapping(cssModel, workspace, networkProject);
 
     /** @type {!Multimap<!SDK.CSSStyleSheetHeader, !Bindings.CSSWorkspaceBinding.LiveLocation>} */
     this._locations = new Multimap();
@@ -182,7 +183,16 @@ Bindings.CSSWorkspaceBinding.ModelInfo = class {
     var uiLocation = null;
     uiLocation = uiLocation || this._sassSourceMapping.rawLocationToUILocation(rawLocation);
     uiLocation = uiLocation || this._stylesSourceMapping.rawLocationToUILocation(rawLocation);
-    return uiLocation;
+    if (uiLocation)
+      return uiLocation;
+
+    var header = rawLocation.header();
+    if (!header)
+      return null;
+    var uiSourceCode = Bindings.NetworkProject.uiSourceCodeForStyleURL(this._workspace, rawLocation.url, header);
+    if (!uiSourceCode)
+      return null;
+    return uiSourceCode.uiLocation(rawLocation.lineNumber, rawLocation.columnNumber);
   }
 
   _dispose() {