DevTools: remove the ComputedStyles -> Styles pane dependency.

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

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 978 matching lines @@
     /**
      * @param {number} nodeId
      * @param {string} name
      * @param {string} value
      */
     setEffectivePropertyValueForNode: function(nodeId, name, value)
     {
         this._agent.setEffectivePropertyValueForNode(nodeId, name, value);
     },
 
+    /**
+     * @param {!WebInspector.DOMNode} node
+     * @return {!Promise.<?WebInspector.CSSMatchedStyles>}
+     */
+    cachedMatchedCascadeForNode: function(node)
+    {
+        if (this._cachedMatchedCascadeNode !== node)
+            this.discardCachedMatchedCascade();
+        this._cachedMatchedCascadeNode = node;
+        if (!this._cachedMatchedCascadePromise)
+            this._cachedMatchedCascadePromise = this.matchedStylesPromise(node.id);
+        return this._cachedMatchedCascadePromise;
+    },
+
+    discardCachedMatchedCascade: function()
+    {
+        delete this._cachedMatchedCascadeNode;
+        delete this._cachedMatchedCascadePromise;
+    },
+
     __proto__: WebInspector.SDKModel.prototype
 }
 
 /**
  * @param {string} text
  * @return {string}
  */
 WebInspector.CSSModel.trimSourceURL = function(text)
 {
     var sourceURLIndex = text.lastIndexOf("/*# sourceURL=");
@@ skipping 181 matching lines @@
 /**
  * @constructor
  * @param {?WebInspector.CSSStyleDeclaration} inlineStyle
  * @param {?WebInspector.CSSStyleDeclaration} attributesStyle
  */
 WebInspector.CSSModel.InlineStyleResult = function(inlineStyle, attributesStyle)
 {
     this.inlineStyle = inlineStyle;
     this.attributesStyle = attributesStyle;
 }