[DevTools] enable async stacks by default

third_party/WebKit/LayoutTests/inspector/sources/debugger-async/async-await/async-pause-on-exception-expected.txt

Index: third_party/WebKit/LayoutTests/inspector/sources/debugger-async/async-await/async-pause-on-exception-expected.txt
diff --git a/third_party/WebKit/LayoutTests/inspector/sources/debugger-async/async-await/async-pause-on-exception-expected.txt b/third_party/WebKit/LayoutTests/inspector/sources/debugger-async/async-await/async-pause-on-exception-expected.txt
index 21aa860ad1bd7b956c7b5a6450cb97d310ff7bc1..cc7b7406887056d3067fe37a738ef634a59b12dd 100644
--- a/third_party/WebKit/LayoutTests/inspector/sources/debugger-async/async-await/async-pause-on-exception-expected.txt
+++ b/third_party/WebKit/LayoutTests/inspector/sources/debugger-async/async-await/async-pause-on-exception-expected.txt
@@ -6,14 +6,23 @@ Tests that pause on promise rejection works.
 Set timer for test function.
 Call stack:
     0) testFunction (async-pause-on-exception.html:37)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)

[dgozman, 2017/04/21 23:39:17]

Why suddenly this?

[kozy, 2017/04/22 00:02:57]

We skip all frames after frame with functionName === 'scheduleTestFunction'
including this frame [1] 

[1]
https://cs.chromium.org/chromium/src/third_party/WebKit/LayoutTests/http/test...

+    <... skipped remaining frames ...>
 Paused on promise rejectionError: uncaught
 
 === Pausing on all exceptions ===
 Set timer for test function.
 Call stack:
     0) testFunction (async-pause-on-exception.html:36)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)
+    <... skipped remaining frames ...>
 Paused on promise rejectionError: caught
 Call stack:
     0) testFunction (async-pause-on-exception.html:37)
+    [setTimeout]
+    0) scheduleTestFunction (debugger-test.js:3)
+    <... skipped remaining frames ...>
 Paused on promise rejectionError: uncaught