[VM logging] Fix nesting of log blocker (second attempt).

[VM logging] Fix nesting of log blocker (second attempt).
Fix expectations of log blocker test, i.e. no swapping occurs anymore.

R=rmacnak@google.com

Committed: https://github.com/dart-lang/sdk/commit/407f1f8ca19699e2eb2f46f8af4dd2de110be1d0

[regis, 2017-08-11 22:07:34]

regis@google.com changed reviewers:
+ asiva@google.com, rmacnak@google.com

[regis, 2017-08-11 22:07:34]

Here is my second attempt at fixing nested log blockers.
Note that the actual fix is identical as in my first attempt, but I had missed
the existence of a log blocker test that required an update, because the
behavior is changing.

Let me explain. The previous behavior swapped portion of the log. For example,
the test printed APPLE BANANA, instead of BANANA APPLE. This is what I want to
fix, because this swapping make disassembly unreadable and confusing.

Now, I am not sure there was a reason behind this swapping that was explicitly
tested for in this test.

Let me know if I miss something.

Thanks,
Regis

[rmacnak, 2017-08-12 00:05:07]

LGTM

[regis, 2017-08-14 15:38:57]

Description was changed from

==========
[VM logging] Fix nesting of log blocker (second attempt).
Fix expectations of log blocker test, i.e. no swapping occurs anymore.
==========

to

==========
[VM logging] Fix nesting of log blocker (second attempt).
Fix expectations of log blocker test, i.e. no swapping occurs anymore.

R=rmacnak@google.com

Committed:
https://github.com/dart-lang/sdk/commit/407f1f8ca19699e2eb2f46f8af4dd2de110be1d0
==========

[regis, 2017-08-14 15:38:58]

Committed patchset #1 (id:1) manually as
407f1f8ca19699e2eb2f46f8af4dd2de110be1d0 (presubmit successful).