The following revision refers to this bug:
  https://chromium.googlesource.com/custom-tabs-client/+/a0b6c6f7db4127c191ebb9ef008609224658edb2

commit a0b6c6f7db4127c191ebb9ef008609224658edb2
Author: Lei Tian <ltian@chromium.org>
Date: Wed Dec 13 20:04:20 2017

Display backup dialog for Browser Actions is no provider is available

If no Browser Actions provider is available, Browser Actions support
library need to display a backup dialog which handles all custom items.

The backup dialog tries to follow the UX guidance for Chrome context
menu. Here shows what looks like:
https://drive.google.com/a/google.com/file/d/1IuZcMmVRRrp9MmmKsm-0QgroAU_vmxGx/view?usp=sharing.

Bug:  789806 
Change-Id: I6b0de5616bc07f3464acba06c3ac812adc9f6e61
Reviewed-on: https://chromium-review.googlesource.com/798635
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Commit-Queue: Lei Tian <ltian@chromium.org>

[modify] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/Application/src/main/java/org/chromium/customtabsclient/MainActivity.java
[add] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/res/values/colors.xml
[add] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuAdapter.java
[modify] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/src/android/support/customtabs/browseractions/BrowserActionsIntent.java
[add] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/res/layout/browser_actions_context_menu_row.xml
[add] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuDialog.java
[modify] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/Application/src/main/AndroidManifest.xml
[add] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuUi.java
[add] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/res/layout/browser_actions_context_menu_page.xml
[add] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/res/values/dimens.xml
[add] https://crrev.com/a0b6c6f7db4127c191ebb9ef008609224658edb2/customtabs/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuView.java

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f423fceefe4b957ff2ba8ed0860aa2b198baf8f8

commit f423fceefe4b957ff2ba8ed0860aa2b198baf8f8
Author: Lei Tian <ltian@chromium.org>
Date: Thu Dec 21 01:24:26 2017

Sync the CCT change of displaying fallback dialog for Browser Actions

Sync the CCT change of displaying fallback dialog for Browser Actions.

Bug:  789806 
Change-Id: I4ff6d4021e098036bcfdde150bbc1c53c19840ea
Reviewed-on: https://chromium-review.googlesource.com/835279
Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Commit-Queue: Lei Tian <ltian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#525553}
[modify] https://crrev.com/f423fceefe4b957ff2ba8ed0860aa2b198baf8f8/DEPS
[modify] https://crrev.com/f423fceefe4b957ff2ba8ed0860aa2b198baf8f8/third_party/custom_tabs_client/BUILD.gn

The following revision refers to this bug:
  https://chromium.googlesource.com/custom-tabs-client/+/11160d765f0448083fc0ad7d2059c6d2ce3002b7

commit 11160d765f0448083fc0ad7d2059c6d2ce3002b7
Author: Lei Tian <ltian@chromium.org>
Date: Wed Jan 31 18:17:05 2018

Sync Browser Actions changes on Android support lib

Sync the latest changes of Browser Actions in Android support lib.

Bug:  789806 
Change-Id: Id452b801a2604b113a8f94774afa109bfb955c9e
Reviewed-on: https://chromium-review.googlesource.com/894728
Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Commit-Queue: Lei Tian <ltian@chromium.org>

[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/res/values/colors.xml
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuAdapter.java
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/src/android/support/customtabs/browseractions/BrowserActionsIntent.java
[add] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/tests/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuUiTest.java
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/res/layout/browser_actions_context_menu_row.xml
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/build.gradle
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuDialog.java
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/tests/src/android/support/customtabs/browseractions/BrowserActionsIntentTest.java
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuUi.java
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/res/layout/browser_actions_context_menu_page.xml
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/res/values/dimens.xml
[modify] https://crrev.com/11160d765f0448083fc0ad7d2059c6d2ce3002b7/customtabs/src/android/support/customtabs/browseractions/BrowserActionsFallbackMenuView.java