As a user I want to be able to save or share from anywhere in the article.
(From user in play store, "This is great app but last update Put the bookmark button in the top of the content page and now if I want to save a page during reading I have to scroll all the way up and lose my progress, would you improve on this?")
Save and share were previously in the overflow menu. We wanted to make them more prominent, so we added them into a native toolbar below the title. T116122
We considered several options here https://docs.google.com/presentation/d/1EIgQeEFcYPCysmmyuEoIVb9XziGrLjeoX6wFkjX1ZNg/edit#slide=id.p
We want to promote save and share as primary article actions. Tabs is also important but we can utilize lollipop's multiple tasks to make them more chrome-like. T116494