DevTools: [SASS] introduce workspace/cssModel adapter for SASS processor.

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

Index: third_party/WebKit/Source/devtools/front_end/sdk/CSSStyleModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/CSSStyleModel.js b/third_party/WebKit/Source/devtools/front_end/sdk/CSSStyleModel.js
index 32df7ceb69d99e4d6e629d224e1dbb120857af68..046a2b3695ed3e256c6e9d2397ab49bcf2b606ee 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/CSSStyleModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/CSSStyleModel.js
@@ -70,7 +70,8 @@ WebInspector.CSSStyleModel.Events = {
     PseudoStateForced: "PseudoStateForced",
     StyleSheetAdded: "StyleSheetAdded",
     StyleSheetChanged: "StyleSheetChanged",
-    StyleSheetRemoved: "StyleSheetRemoved"
+    StyleSheetRemoved: "StyleSheetRemoved",
+    ExternalRangeEdit: "ExternalRangeEdit"
 }
 
 WebInspector.CSSStyleModel.MediaTypes = ["all", "braille", "embossed", "handheld", "print", "projection", "screen", "speech", "tty", "tv"];
@@ -565,7 +566,6 @@ WebInspector.CSSStyleModel.prototype = {
 
             if (majorChange)
                 this._domModel.markUndoableState();
-            this._fireStyleSheetChanged(styleSheetId);
             return null;
         }
     },
@@ -1964,6 +1964,8 @@ WebInspector.CSSStyleSheetHeader.prototype = {
          */
         function callback(error, sourceMapURL)
         {
+            if (!error)
+                this._cssModel._fireStyleSheetChanged(this.id);
             this.sourceMapURL = sourceMapURL;
             return error || null;
         }