Replace assets for avatar placeholder on Android
This CL updates pictures used when there's no user avatar available.
Before, there were two set of PNGs:
1. account_management_no_picture.png (40dp), used in settings (SigninPreference
and AccountManagementFragment), AutoSigninSnackbarController
and AccountChooserDialog.
2. fre_placeholder.png (130dp), used in AccountSigninView.
This CL replaces these assets with logo_avatar_anonymous.xml vector drawable,
reducing APK size and removing duplication.
The new asset also looks different than the old ones - it is gray in color
(old ones were blue) and uses different silhouette for avatar.
BUG=
722910
Review-Url:
https://codereview.chromium.org/2912083003
Cr-Commit-Position: refs/heads/master@{#477301}
Committed:
https://chromium.googlesource.com/chromium/src/+/a99122347afb681ff46cf7a78c68a44f64549606