The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fe0ffcc10613e4f9c00fc6fc6ae4e9c4feec5914

commit fe0ffcc10613e4f9c00fc6fc6ae4e9c4feec5914
Author: Shakti Sahu <shaktisahu@chromium.org>
Date: Fri Sep 29 04:30:15 2017

IPH : multi-window, alignment and circle size fixes

1 - Changed Download Home IPH pulse from rectangle to circle (in chrome home bottom sheet)
2 - Reduced circle radius size for chrome home to 12dp (crbug/769429)
3 - Multi-window : Fixed chrome home IPH on bottom window from getting below the bottom toolbar. (crbug/763813)
4 - Landscape mode : Fixed bubble arrow not aligning to menu button in landscape. (crbug/757971)

Bug:  769429 , 763813,  757971 
Change-Id: Ic41c02ca34f4a3b9e6827ce4cec9f3438eb64bf0
Reviewed-on: https://chromium-review.googlesource.com/688254
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#505290}
[modify] https://crrev.com/fe0ffcc10613e4f9c00fc6fc6ae4e9c4feec5914/chrome/android/java/res/values/dimens.xml
[modify] https://crrev.com/fe0ffcc10613e4f9c00fc6fc6ae4e9c4feec5914/chrome/android/java/src/org/chromium/chrome/browser/widget/PulseDrawable.java
[modify] https://crrev.com/fe0ffcc10613e4f9c00fc6fc6ae4e9c4feec5914/chrome/android/java/src/org/chromium/chrome/browser/widget/bottomsheet/BottomSheetContentController.java
[modify] https://crrev.com/fe0ffcc10613e4f9c00fc6fc6ae4e9c4feec5914/chrome/android/java/src/org/chromium/chrome/browser/widget/textbubble/TextBubble.java
[modify] https://crrev.com/fe0ffcc10613e4f9c00fc6fc6ae4e9c4feec5914/chrome/android/java/src/org/chromium/chrome/browser/widget/textbubble/ViewAnchoredTextBubble.java

Verified on Chrome:63.0.3231.0 Device:Pixel XL/OPR1.170623.011