[DevTools] enable async stacks by default

third_party/WebKit/LayoutTests/inspector/sources/debugger-step/debugger-step-out-event-listener-expected.txt

Index: third_party/WebKit/LayoutTests/inspector/sources/debugger-step/debugger-step-out-event-listener-expected.txt
diff --git a/third_party/WebKit/LayoutTests/inspector/sources/debugger-step/debugger-step-out-event-listener-expected.txt b/third_party/WebKit/LayoutTests/inspector/sources/debugger-step/debugger-step-out-event-listener-expected.txt
index 9def0dfac1b1538df7c3449b2f6d037c9c510686..5ae61e7b00a0ad03e734b77333c17d5ee86cda3f 100644
--- a/third_party/WebKit/LayoutTests/inspector/sources/debugger-step/debugger-step-out-event-listener-expected.txt
+++ b/third_party/WebKit/LayoutTests/inspector/sources/debugger-step/debugger-step-out-event-listener-expected.txt
@@ -5,6 +5,9 @@ Set timer for test function.
 Call stack:
     0) inner (debugger-step-out-event-listener.html:26)
     1) testFunction (debugger-step-out-event-listener.html:32)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)
+    <... skipped remaining frames ...>
 
 Executing StepInto...
 Executing StepInto...
@@ -13,25 +16,40 @@ Call stack:
     0) fooEventHandler1 (debugger-step-out-event-listener.html:15)
     1) inner (debugger-step-out-event-listener.html:27)
     2) testFunction (debugger-step-out-event-listener.html:32)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)
+    <... skipped remaining frames ...>
 
 Executing StepOut...
 Call stack:
     0) fooEventHandler2 (debugger-step-out-event-listener.html:19)
     1) inner (debugger-step-out-event-listener.html:27)
     2) testFunction (debugger-step-out-event-listener.html:32)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)
+    <... skipped remaining frames ...>
 
 Executing StepOut...
 Call stack:
     0) inner (debugger-step-out-event-listener.html:29)
     1) testFunction (debugger-step-out-event-listener.html:32)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)
+    <... skipped remaining frames ...>
 
 Set timer for test function.
 Call stack:
     0) inner (debugger-step-out-event-listener.html:26)
     1) testFunction (debugger-step-out-event-listener.html:32)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)
+    <... skipped remaining frames ...>
 
 Executing StepOut...
 Call stack:
     0) testFunction (debugger-step-out-event-listener.html:33)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)
+    <... skipped remaining frames ...>