DevTools: use target-based model accessors only.

LayoutTests/http/tests/inspector/network/download.html

Index: LayoutTests/http/tests/inspector/network/download.html
diff --git a/LayoutTests/http/tests/inspector/network/download.html b/LayoutTests/http/tests/inspector/network/download.html
index c5af00d7371e9ce59e95fe987ce7bc00e5322472..5bd2c5e4ea0eb5eadf41f788cd2fa3f63ed198ff 100644
--- a/LayoutTests/http/tests/inspector/network/download.html
+++ b/LayoutTests/http/tests/inspector/network/download.html
@@ -18,7 +18,7 @@ function test()
 
     function responseReceived(requestId, time, resourceType, response)
     {
-        var request = WebInspector.networkLog.requestForId(requestId);
+        var request = InspectorTest.networkLog.requestForId(requestId);
         if (/download\.zzz/.exec(request.url)) {
             InspectorTest.addResult("Received response for download.zzz");
             InspectorTest.addResult("SUCCESS");
@@ -28,14 +28,14 @@ function test()
 
     function loadingFinished(requestId, finishTime)
     {
-        var request = WebInspector.networkLog.requestForId(requestId);
+        var request = InspectorTest.networkLog.requestForId(requestId);
         if (/download\.zzz/.exec(request.url))
             InspectorTest.completeTest();
     }
 
     function loadingFailed(requestId, time, localizedDescription, canceled)
     {
-        var request = WebInspector.networkLog.requestForId(requestId);
+        var request = InspectorTest.networkLog.requestForId(requestId);
         if (/download\.zzz/.exec(request.url))
             InspectorTest.completeTest();
     }