Expose loading state from Blimp to Tab

Expose loading state from Blimp to Tab

Make sure Tab gets notified of Blimp start and stop loading states so
that it can decide whether or not to show NativePages or BlimpContents.
BUG=

Committed: https://crrev.com/1a0fc96875698202de9d8164226b4e76af60169a
Cr-Commit-Position: refs/heads/master@{#416412}

[David Trainor- moved to gerrit, 2016-09-02 23:10:00]

dtrainor@chromium.org changed reviewers:
+ nyquist@chromium.org

[David Trainor- moved to gerrit, 2016-09-02 23:10:01]

ptal thanks!

[nyquist, 2016-09-02 23:11:40]

The CQ bit was checked by nyquist@chromium.org

[nyquist, 2016-09-02 23:11:40]

lgtm

[commit-bot: I haz the power, 2016-09-02 23:12:12]

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, 2016-09-02 23:28:19]

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

[commit-bot: I haz the power, 2016-09-02 23:28:20]

Try jobs failed on following builders:
  android_compile_dbg on master.tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/android_comp...)

[David Trainor- moved to gerrit, 2016-09-02 23:46:47]

The CQ bit was checked by dtrainor@chromium.org

[David Trainor- moved to gerrit, 2016-09-02 23:46:48]

The patchset sent to the CQ was uploaded after l-g-t-m from nyquist@chromium.org
Link to the patchset: https://codereview.chromium.org/2300103004/#ps20001
(title: "Added test!")

[commit-bot: I haz the power, 2016-09-02 23:47:17]

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, 2016-09-03 00:34:43]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-03 00:36:21]

Description was changed from

==========
Expose loading state from Blimp to Tab

Make sure Tab gets notified of Blimp start and stop loading states so
that it can decide whether or not to show NativePages or BlimpContents.
BUG=
==========

to

==========
Expose loading state from Blimp to Tab

Make sure Tab gets notified of Blimp start and stop loading states so
that it can decide whether or not to show NativePages or BlimpContents.
BUG=

Committed: https://crrev.com/1a0fc96875698202de9d8164226b4e76af60169a
Cr-Commit-Position: refs/heads/master@{#416412}
==========

[commit-bot: I haz the power, 2016-09-03 00:36:22]

Patchset 2 (id:??) landed as
https://crrev.com/1a0fc96875698202de9d8164226b4e76af60169a
Cr-Commit-Position: refs/heads/master@{#416412}