[Cronet] Fix SdchTest.DictionaryAddedObserver

[Cronet] Fix SdchTest.DictionaryAddedObserver

The test run linked by the bug below seems to suggest that mBlock is null
when we call mBlock.open().

This CL changes initialization of mBlock to be more compliant with the standard
way of initialization member variables.

BUG=664176
Committed: https://crrev.com/9049bdbc90b226e77758b7ae845584422f0663ac
Cr-Commit-Position: refs/heads/master@{#431306}

[xunjieli, 2016-11-10 15:35:21]

xunjieli@chromium.org changed reviewers:
+ kapishnikov@chromium.org

[xunjieli, 2016-11-10 15:35:21]

Andrei, PTAL. Thanks!

[kapishnikov, 2016-11-10 18:33:51]

lgtm

[xunjieli, 2016-11-10 18:34:19]

The CQ bit was checked by xunjieli@chromium.org

[commit-bot: I haz the power, 2016-11-10 18:34:47]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-10 18:59:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-10 19:09:18]

Description was changed from

==========
[Cronet] Fix SdchTest.DictionaryAddedObserver

The test run linked by the bug below seems to suggest that mBlock is null
when we call mBlock.open().

This CL changes initialization of mBlock to be more compliant with the standard
way of initialization member variables.

BUG=664176
==========

to

==========
[Cronet] Fix SdchTest.DictionaryAddedObserver

The test run linked by the bug below seems to suggest that mBlock is null
when we call mBlock.open().

This CL changes initialization of mBlock to be more compliant with the standard
way of initialization member variables.

BUG=664176

Committed: https://crrev.com/9049bdbc90b226e77758b7ae845584422f0663ac
Cr-Commit-Position: refs/heads/master@{#431306}
==========

[commit-bot: I haz the power, 2016-11-10 19:09:18]

Patchset 1 (id:??) landed as
https://crrev.com/9049bdbc90b226e77758b7ae845584422f0663ac
Cr-Commit-Position: refs/heads/master@{#431306}