The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6815d5a40e21e0eac11e8a2313b8d1362e716c53

commit 6815d5a40e21e0eac11e8a2313b8d1362e716c53
Author: Lei Tian <ltian@chromium.org>
Date: Thu Nov 09 03:54:51 2017

Add saved tabs info in TabPersistentStore.onMetadataSavedAsynchronously

Add the saved tabs' ids through
TabPersistentStore.onMetadataSavedAsynchronously. Then later Browser
Actions can know how to which tab has been added in the tab list and
saved to disk from it. This signal guarantees the saved tabs can be
succcessfully restored.

Also change TabPersistentStore to hold a ObserverList of
TabPersistentStoreObserver.

Bug:  766349 
Change-Id: I53f8515ed3e3169a9f89f5c602ff44e75e5b5e89
Reviewed-on: https://chromium-review.googlesource.com/759097
Commit-Queue: Lei Tian <ltian@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#515088}
[modify] https://crrev.com/6815d5a40e21e0eac11e8a2313b8d1362e716c53/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsTabModelSelector.java
[modify] https://crrev.com/6815d5a40e21e0eac11e8a2313b8d1362e716c53/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java
[modify] https://crrev.com/6815d5a40e21e0eac11e8a2313b8d1362e716c53/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabPersistentStore.java
[modify] https://crrev.com/6815d5a40e21e0eac11e8a2313b8d1362e716c53/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabTabPersistencePolicyTest.java
[modify] https://crrev.com/6815d5a40e21e0eac11e8a2313b8d1362e716c53/chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/RestoreMigrateTest.java
[modify] https://crrev.com/6815d5a40e21e0eac11e8a2313b8d1362e716c53/chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/TabModelMergingTest.java
[modify] https://crrev.com/6815d5a40e21e0eac11e8a2313b8d1362e716c53/chrome/android/javatests/src/org/chromium/chrome/browser/tabmodel/TabPersistentStoreTest.java

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/64565fd707ff5a4e2d1b378b26dc2e28e35e4806

commit 64565fd707ff5a4e2d1b378b26dc2e28e35e4806
Author: Lei Tian <ltian@chromium.org>
Date: Fri Nov 17 18:40:31 2017

Use TabPersistentStoreObserver.onMetadataSavedAsynchronously to background the Browser Actions tab creation service

Change the logic to background the Browser Actions tab creation service
based on TabPersistentStoreObserver.onMetadataSavedAsynchronously. The
callback indicates that tab model lists are backuped so the saved tabs
can be restored succesfully.

Also for the notification when a new tab has not been created (tabId is
not available), the Intent to bind the notification will be a VIEW
intent. This notification is necessary to make the service foreground.

Bug:  766349 
Change-Id: I73d49e2a1e26410b2dd6e51a07f35e9965b9a38a
Reviewed-on: https://chromium-review.googlesource.com/769852
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Lei Tian <ltian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517492}
[modify] https://crrev.com/64565fd707ff5a4e2d1b378b26dc2e28e35e4806/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsService.java
[modify] https://crrev.com/64565fd707ff5a4e2d1b378b26dc2e28e35e4806/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsTabModelSelector.java
[modify] https://crrev.com/64565fd707ff5a4e2d1b378b26dc2e28e35e4806/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/680dab104e7c8e522672398bbf8f0c21df3efed1

commit 680dab104e7c8e522672398bbf8f0c21df3efed1
Author: Maria Khomenko <mariakhomenko@chromium.org>
Date: Mon Nov 20 20:57:02 2017

Revert "Use TabPersistentStoreObserver.onMetadataSavedAsynchronously to background the Browser Actions tab creation service"

This reverts commit 64565fd707ff5a4e2d1b378b26dc2e28e35e4806.

Reason for revert: Breaking tests on tablets: crbug.com/787048

Original change's description:
> Use TabPersistentStoreObserver.onMetadataSavedAsynchronously to background the Browser Actions tab creation service
>
> Change the logic to background the Browser Actions tab creation service
> based on TabPersistentStoreObserver.onMetadataSavedAsynchronously. The
> callback indicates that tab model lists are backuped so the saved tabs
> can be restored succesfully.
>
> Also for the notification when a new tab has not been created (tabId is
> not available), the Intent to bind the notification will be a VIEW
> intent. This notification is necessary to make the service foreground.
>
> Bug:  766349 
> Change-Id: I73d49e2a1e26410b2dd6e51a07f35e9965b9a38a
> Reviewed-on: https://chromium-review.googlesource.com/769852
> Reviewed-by: Ted Choc <tedchoc@chromium.org>
> Commit-Queue: Lei Tian <ltian@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#517492}

TBR=tedchoc@chromium.org,twellington@chromium.org,ltian@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug:  766349 , 787048
Change-Id: I6c0be2dc64c8bdb9d4bd0406ddbc094da4a9a805
Reviewed-on: https://chromium-review.googlesource.com/779919
Commit-Queue: Maria Khomenko <mariakhomenko@chromium.org>
Reviewed-by: Maria Khomenko <mariakhomenko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517922}
[modify] https://crrev.com/680dab104e7c8e522672398bbf8f0c21df3efed1/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsService.java
[modify] https://crrev.com/680dab104e7c8e522672398bbf8f0c21df3efed1/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsTabModelSelector.java
[modify] https://crrev.com/680dab104e7c8e522672398bbf8f0c21df3efed1/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1c3e620eee0877d415e9f8c651dea8c77d399cce

commit 1c3e620eee0877d415e9f8c651dea8c77d399cce
Author: Lei Tian <ltian@chromium.org>
Date: Tue Nov 28 01:24:19 2017

Reland "Use TabPersistentStoreObserver.onMetadataSavedAsynchronously to background the Browser Actions tab creation service"

This relands commit 64565fd707ff5a4e2d1b378b26dc2e28e35e4806.

Original change's description:
> Use TabPersistentStoreObserver.onMetadataSavedAsynchronously to
background the Browser Actions tab creation service
>
> Change the logic to background the Browser Actions tab creation
service
> based on TabPersistentStoreObserver.onMetadataSavedAsynchronously. The
> callback indicates that tab model lists are backuped so the saved tabs
> can be restored succesfully.
>
> Also for the notification when a new tab has not been created (tabId
is
> not available), the Intent to bind the notification will be a VIEW
> intent. This notification is necessary to make the service foreground.
>
> Bug:  766349 
> Change-Id: I73d49e2a1e26410b2dd6e51a07f35e9965b9a38a
> Reviewed-on: https://chromium-review.googlesource.com/769852
> Reviewed-by: Ted Choc <tedchoc@chromium.org>
> Commit-Queue: Lei Tian <ltian@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#517492}

Bug:  766349 
Change-Id: Icb35c3b0e3ed2186e48c7f0e77ceb6a07bc1f39f
Reviewed-on: https://chromium-review.googlesource.com/791392
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Lei Tian <ltian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519509}
[modify] https://crrev.com/1c3e620eee0877d415e9f8c651dea8c77d399cce/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsService.java
[modify] https://crrev.com/1c3e620eee0877d415e9f8c651dea8c77d399cce/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsTabModelSelector.java
[modify] https://crrev.com/1c3e620eee0877d415e9f8c651dea8c77d399cce/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorImpl.java
[modify] https://crrev.com/1c3e620eee0877d415e9f8c651dea8c77d399cce/chrome/android/javatests/src/org/chromium/chrome/browser/browseractions/BrowserActionActivityTest.java