Deflake inspector-protocol/network/resource-type.html

Test test reads body right after receiving a response, but it leads to some
flakiness. It is not guaranteed that the response body is available at the
moment.

This change fixes the problem by reading response body after the loading
finishes.

BUG=675924
R=dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2592663002
Cr-Commit-Position: refs/heads/master@{#439844}

third_party/WebKit/LayoutTests/inspector-protocol/network/resource-type.html

@@ -13,6 +13,7 @@ function appendIframe()
 function test()
 {
     InspectorTest.eventHandler["Network.responseReceived"] = onResponseReceived;
+    InspectorTest.eventHandler["Network.loadingFinished"] = onLoadingFinished;
 
     function enableNetwork()
     {
@@ -60,10 +61,7 @@ function test()
                 }
                 resource.gotType = type;
                 resource.gotUrl = url;
-                if ("responseAvailable" in resource)
-                    onResponseReady();
-                else
-                    InspectorTest.sendCommand("Network.getResponseBody", { "requestId": requestId }, onResponseBody.bind(null, resource));
+                resource.requestId = requestId;
                 return;
             }
         }
@@ -71,6 +69,21 @@ function test()
         InspectorTest.completeTest();
     }
 
+    function onLoadingFinished(event)
+    {
+        const requestId = event.params.requestId;
+        for (const resource of resources) {
+            if (resource.requestId !== requestId) {
+                continue;
+            }
+            if ("responseAvailable" in resource) {
+                onResponseReady();
+            } else {
+                InspectorTest.sendCommand("Network.getResponseBody", { "requestId": requestId }, onResponseBody.bind(null, resource));
+            }
+        }
+    }
+
     function onResponseReady()
     {
         resourcesLeft -= 1;