The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4e8da6c082ccad65bfe252490d33cb3c8c8890d9

commit 4e8da6c082ccad65bfe252490d33cb3c8c8890d9
Author: Shimi Zhang <ctzsm@chromium.org>
Date: Tue Mar 27 18:30:01 2018

[Android] SelectionPopupController cleanup

This CL
1) Removed an obsolete TODO.
2) Removed MenuDescriptor, we are not taking adavantage of it.

Bug:  825381 
Change-Id: Iba22809a0046150165ec4e1c265c00e77b567898
Reviewed-on: https://chromium-review.googlesource.com/978886
Reviewed-by: Pedro Amaral <amaralp@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Commit-Queue: Shimi Zhang <ctzsm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#546179}
[modify] https://crrev.com/4e8da6c082ccad65bfe252490d33cb3c8c8890d9/content/public/android/BUILD.gn
[delete] https://crrev.com/d3480ee10a9a127788f19aa32c747046992b6e62/content/public/android/java/src/org/chromium/content/browser/selection/MenuDescriptor.java
[modify] https://crrev.com/4e8da6c082ccad65bfe252490d33cb3c8c8890d9/content/public/android/java/src/org/chromium/content/browser/selection/SelectionPopupControllerImpl.java
[delete] https://crrev.com/d3480ee10a9a127788f19aa32c747046992b6e62/content/public/android/junit/src/org/chromium/content/browser/selection/MenuDescriptorTest.java