Tests that dataReceived is called on NetworkDispatcher for all incoming data.

Received response.
Exception while running: function loadingFinished(requestId, finishTime, encodedDataLength) {
    var request = NetworkLog.networkLog.requestByManagerAndId(TestRunner.networkManager, requestId);
    if (/resource\.php/.exec(request.url())) {
      TestRunner.assertEquals(encodedBytesReceived, encodedDataLength, 'Data length mismatch');
      TestRunner.addResult('SUCCESS');
      TestRunner.completeTest();
    }
  }
Error: Failure (Data length mismatch): expected <312> found <50372>
    at Object.TestRunner.assertEquals (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:8183:24)
    at SDK.NetworkDispatcher.loadingFinished (http://127.0.0.1:8000/devtools/network/network-datareceived.js:36:18)
    at SDK.NetworkDispatcher.result (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:8081:42)
    at SDK.NetworkDispatcher.receiver.(anonymous function) (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:8075:58)
    at Protocol.InspectorBackend._DispatcherPrototype.dispatch (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:3351:26)
    at SDK.Target._onMessage (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:3304:31)
    at SDK.MainConnection._dispatchMessage (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:3496:41)
    at Common.Object.dispatchEventToListeners (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:482:23)
    at innerDispatch (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:940:98)
    at Host.InspectorFrontendAPIImpl._dispatch (file:///b/s/w/ir/out/Release/resources/inspector/integration_test_runner.js:940:1)

