Break getBookmarkTitle() to two lines to see which object can be null

Break getBookmarkTitle() to two lines to see which object can be null

We saw some NPE in getBookmarkTitle() and we are not sure which object
was null at the time.

BUG=504317
Committed: https://crrev.com/295948c21392180f5e3227f282ef374df5245c8f
Cr-Commit-Position: refs/heads/master@{#339151}

[Ian Wen, 2015-07-16 00:14:02]

ianwen@chromium.org changed reviewers:
+ kkimlabs@chromium.org

[Kibeom Kim (inactive), 2015-07-16 00:18:43]

lgtm

[Ian Wen, 2015-07-16 00:20:20]

The CQ bit was checked by ianwen@chromium.org

[commit-bot: I haz the power, 2015-07-16 00:21:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1234343002/1

[commit-bot: I haz the power, 2015-07-16 00:28:08]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-07-16 00:28:09]

Try jobs failed on following builders:
  android_chromium_gn_compile_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  android_chromium_gn_compile_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  linux_chromium_gn_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_gn_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  win8_chromium_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_ng/...)

(exceeded global retry quota)

[Ian Wen, 2015-07-16 22:34:29]

The CQ bit was checked by ianwen@chromium.org

[commit-bot: I haz the power, 2015-07-16 22:40:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1234343002/1

[commit-bot: I haz the power, 2015-07-16 22:58:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-16 22:59:38]

Patchset 1 (id:??) landed as
https://crrev.com/295948c21392180f5e3227f282ef374df5245c8f
Cr-Commit-Position: refs/heads/master@{#339151}