Revert of Streams: Remove isTerminating() calls

third_party/WebKit/Source/core/workers/WorkerThread.cpp

Index: third_party/WebKit/Source/core/workers/WorkerThread.cpp
diff --git a/third_party/WebKit/Source/core/workers/WorkerThread.cpp b/third_party/WebKit/Source/core/workers/WorkerThread.cpp
index 9588cd07371729bf75118303720b776d55716a71..f9897d6fd64c0b86189f3ace65db4e990b7dcadd 100644
--- a/third_party/WebKit/Source/core/workers/WorkerThread.cpp
+++ b/third_party/WebKit/Source/core/workers/WorkerThread.cpp
@@ -102,7 +102,7 @@
             return;
         }
 
-        m_workerThread->isolate()->TerminateExecution();
+        m_workerThread->forciblyTerminateExecution();
         DCHECK_EQ(WorkerThread::ExitCode::NotTerminated, m_workerThread->m_exitCode);
         m_workerThread->m_exitCode = WorkerThread::ExitCode::AsyncForciblyTerminated;
     }
@@ -382,7 +382,7 @@
             if (mode == TerminationMode::Forcible && m_exitCode == ExitCode::NotTerminated) {
                 DCHECK(m_scheduledForceTerminationTask);
                 m_scheduledForceTerminationTask.reset();
-                isolate()->TerminateExecution();
+                forciblyTerminateExecution();
                 DCHECK_EQ(ExitCode::NotTerminated, m_exitCode);
                 m_exitCode = ExitCode::SyncForciblyTerminated;
             }
@@ -419,7 +419,7 @@
 
             if (shouldScheduleToTerminateExecution) {
                 if (mode == TerminationMode::Forcible) {
-                    isolate()->TerminateExecution();
+                    forciblyTerminateExecution();
                     DCHECK_EQ(ExitCode::NotTerminated, m_exitCode);
                     m_exitCode = ExitCode::SyncForciblyTerminated;
                 } else {
@@ -441,6 +441,13 @@
     workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, crossThreadBind(&WorkerThread::performShutdownOnWorkerThread, crossThreadUnretained(this)));
 }
 
+void WorkerThread::forciblyTerminateExecution()
+{
+    DCHECK(m_globalScope);
+    m_globalScope->scriptController()->willScheduleExecutionTermination();
+    isolate()->TerminateExecution();
+}
+
 bool WorkerThread::isInShutdown()
 {
     // Check if we've started termination or shutdown sequence. Avoid acquiring