Fix leaks when the shared worker is requested to be terminated while loading the main script.

BUG=398742

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180013

Review URL: https://codereview.chromium.org/451603002

git-svn-id: svn://svn.chromium.org/blink/trunk@180239 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/LeakExpectations

@@ -51,10 +51,6 @@ crbug.com/385384 fast/dom/navigator-detached-no-crash.html [ Leak ]
 # Untriaged but known leaks which may be false positives.
 # -----------------------------------------------------------------
 
-crbug.com/398742 fast/workers/shared-worker-event-listener.html [ Leak ]
-crbug.com/398742 fast/workers/worker-crash-with-invalid-location.html [ Leak ]
-crbug.com/398742 http/tests/security/contentSecurityPolicy/1.1/child-src/worker-shared-allowed.html [ Leak ]
-
 crbug.com/364411 fast/frames/location-observe-callback-crash.html [ Leak ]
 
 crbug.com/364417 editing/selection/selection-in-iframe-removed-crash.html [ Leak ]

third_party/WebKit/Source/web/WebSharedWorkerImpl.cpp

@@ -182,6 +182,10 @@ void WebSharedWorkerImpl::stopWorkerThread()
     if (m_mainScriptLoader) {
         m_mainScriptLoader->cancel();
         m_mainScriptLoader.clear();
+        if (client())
+            client()->workerScriptLoadFailed();
+        delete this;
+        return;
     }
     if (m_workerThread)
         m_workerThread->stop();
@@ -347,17 +351,16 @@ void WebSharedWorkerImpl::onScriptLoaderFinished()
 {
     ASSERT(m_loadingDocument);
     ASSERT(m_mainScriptLoader);
-    if (m_mainScriptLoader->failed() || m_askedToTerminate) {
+    if (m_askedToTerminate)
+        return;
+    if (m_mainScriptLoader->failed()) {
         m_mainScriptLoader->cancel();
         if (client())
             client()->workerScriptLoadFailed();
 
         // The SharedWorker was unable to load the initial script, so
-        // shut it down right here unless we're here handling a load
-        // cancellation failure triggered by an explicit shared worker
-        // termination call (via terminateWorkerContext().)
-        if (!m_askedToTerminate)
-            delete this;
+        // shut it down right here.
+        delete this;
         return;
     }
     WorkerThreadStartMode startMode = m_pauseWorkerContextOnStart ? PauseWorkerGlobalScopeOnStart : DontPauseWorkerGlobalScopeOnStart;