Documenting a chat with Nicolas: 

When the user dismisses all snippets, we should stay below the fold and to show the empty state card. 

That looks like this: https://docs.google.com/presentation/d/10RoYrYkofS4CG1AO7Hr5oIPDnZK67ccT7wDX1R2toyg/edit#slide=id.g127ed73201_1_149

If we can, it'd be nice to allow for 32dp of padding between last snippet and bottom of screen when snippet list is full

So to summarize
- allow a single snippet to scroll to the top of the canvas
- when list is full, allow for a 32dp padding at the bottom

 Issue 602272  has been merged into this issue.

Issue 612053 has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e047ff07f0e05ec8f9ba0556eeda413e314599e3

commit e047ff07f0e05ec8f9ba0556eeda413e314599e3
Author: dgn <dgn@chromium.org>
Date: Tue May 17 16:52:30 2016

[NTP Snippets] Fill space below the last snippet if necessary

Add a filler item at the end of the recycler view to push the
snippet items to the top of the view when there are not enough
of them.

Preview: https://goo.gl/photos/BDHFexhW8Cvo9Y4v5

BUG= 603308 

Review-Url: https://codereview.chromium.org/1928063002
Cr-Commit-Position: refs/heads/master@{#394147}

[modify] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/java/res/layout/toolbar.xml
[modify] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/java/res/values/dimens.xml
[modify] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
[modify] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java
[modify] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageListItem.java
[modify] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageRecyclerView.java
[add] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/SpacingListItem.java
[modify] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/java_sources.gni
[modify] https://crrev.com/e047ff07f0e05ec8f9ba0556eeda413e314599e3/chrome/android/junit/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapterTest.java

Closing, as it should fix the animation and layout issues. There are some UX issues (e.g. what to display when everything is cleared), that should be addressed by  issue 612508 .

Issue 613315 has been merged into this issue.