DevTools: use target-based model accessors only.

LayoutTests/inspector/elements/styles/cached-sync-computed-styles.html

Index: LayoutTests/inspector/elements/styles/cached-sync-computed-styles.html
diff --git a/LayoutTests/inspector/elements/styles/cached-sync-computed-styles.html b/LayoutTests/inspector/elements/styles/cached-sync-computed-styles.html
index 018b0a83adc22ccb65fd7e7c2b45c31d23cce2f3..d305b6c51b15a023afa38e1f9aa1811df4d6bcd1 100644
--- a/LayoutTests/inspector/elements/styles/cached-sync-computed-styles.html
+++ b/LayoutTests/inspector/elements/styles/cached-sync-computed-styles.html
@@ -31,8 +31,8 @@ function test()
         var callsLeft = 2;
         nodeId = node.id;
         InspectorTest.addSniffer(InspectorBackend.connection(), "_wrapCallbackAndSendMessageObject", onBackendCall, true);
-        WebInspector.cssModel.getComputedStyleAsync(nodeId, styleCallback);
-        WebInspector.cssModel.getComputedStyleAsync(nodeId, styleCallback);
+        InspectorTest.cssModel.getComputedStyleAsync(nodeId, styleCallback);
+        InspectorTest.cssModel.getComputedStyleAsync(nodeId, styleCallback);
         function styleCallback()
         {
             if (--callsLeft)
@@ -44,7 +44,7 @@ function test()
 
     function step2()
     {
-        WebInspector.cssModel.getComputedStyleAsync(nodeId, callback);
+        InspectorTest.cssModel.getComputedStyleAsync(nodeId, callback);
         function callback()
         {
             InspectorTest.addResult("# of backend calls sent [style update + another request]: " + backendCallCount);