Fix test failure on Cronet Asan bot

Fix test failure on Cronet Asan bot

HostCachePersistenceManager didn't properly initialize writing_pref_,
which caused it to miss the initial read from prefs when asan is
enabled.

BUG=736803
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_cronet_tester

Review-Url: https://codereview.chromium.org/2954393002
Cr-Commit-Position: refs/heads/master@{#482349}
Committed: https://chromium.googlesource.com/chromium/src/+/7d383c8584f0dde579e78f7a47f17fd14b227311

[mgersh, 2017-06-26 18:35:40]

Description was changed from

==========
Fix test failure on Cronet Asan bot

HostCachePersistenceManager didn't properly initialize writing_pref_,
which caused it to miss the initial read from prefs when asan is
enabled.

BUG=736803
==========

to

==========
Fix test failure on Cronet Asan bot

HostCachePersistenceManager didn't properly initialize writing_pref_,
which caused it to miss the initial read from prefs when asan is
enabled.

BUG=736803
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_cronet_tester
==========

[mgersh, 2017-06-26 18:36:11]

mgersh@chromium.org changed reviewers:
+ mef@chromium.org

[mef, 2017-06-26 18:42:28]

lgtm

[mgersh, 2017-06-26 18:44:08]

The CQ bit was checked by mgersh@chromium.org

[commit-bot: I haz the power, 2017-06-26 18:44:30]

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, 2017-06-26 19:20:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498502648716520, "parent_rev":
"f6242a5f445d0bf60387d7070ea4b0e7eb09b6b5", "commit_rev":
"7d383c8584f0dde579e78f7a47f17fd14b227311"}

[commit-bot: I haz the power, 2017-06-26 19:20:39]

Description was changed from

==========
Fix test failure on Cronet Asan bot

HostCachePersistenceManager didn't properly initialize writing_pref_,
which caused it to miss the initial read from prefs when asan is
enabled.

BUG=736803
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_cronet_tester
==========

to

==========
Fix test failure on Cronet Asan bot

HostCachePersistenceManager didn't properly initialize writing_pref_,
which caused it to miss the initial read from prefs when asan is
enabled.

BUG=736803
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_cronet_tester

Review-Url: https://codereview.chromium.org/2954393002
Cr-Commit-Position: refs/heads/master@{#482349}
Committed:
https://chromium.googlesource.com/chromium/src/+/7d383c8584f0dde579e78f7a47f1...
==========

[commit-bot: I haz the power, 2017-06-26 19:20:40]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/7d383c8584f0dde579e78f7a47f1...