If you sign out, the profile picture in the login screen is properly cropped and resized. Confirmed that the image stored at /home/chronos is properly cropped and resized to 512x512 pixels.

The problem is that the raw_image is not updated. I'll create a fix.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/730760a001e019fc2f5fa8d8a2035d0e9dd8539d

commit 730760a001e019fc2f5fa8d8a2035d0e9dd8539d
Author: satorux <satorux@chromium.org>
Date: Wed Mar 02 04:22:32 2016

Rename raw_image() to image_bytes() in UserImage

raw_image() was a misnomer, because this function returns
data bytes representation of an image encoded in web-compatible
format such as JPEG for WebUI (ex. chrome://userimage/),
rather than raw bitmap data.

Along the way, get rid of DiscardRawImage() that is not
used at all

BUG= 590630 
TEST=everything builds as before
TBR=achuith@chromium.org for components/user_manager, bshe@chromium.org for components/wallpaper

Review URL: https://codereview.chromium.org/1747843002

Cr-Commit-Position: refs/heads/master@{#378687}

[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/chrome/browser/chromeos/login/users/avatar/user_image_loader.cc
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/chrome/browser/chromeos/login/users/avatar/user_image_manager_impl.cc
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/chrome/browser/ui/webui/chromeos/image_source.cc
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/chrome/browser/ui/webui/options/chromeos/user_image_source.cc
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/components/user_manager/user.cc
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/components/user_manager/user.h
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/components/user_manager/user_image/user_image.cc
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/components/user_manager/user_image/user_image.h
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/components/wallpaper/wallpaper_manager_base.cc
[modify] https://crrev.com/730760a001e019fc2f5fa8d8a2035d0e9dd8539d/components/wallpaper/wallpaper_manager_base.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5820ae933247dc363ba3ae51220acd64ba3488b0

commit 5820ae933247dc363ba3ae51220acd64ba3488b0
Author: satorux <satorux@chromium.org>
Date: Fri Mar 11 05:13:04 2016

Crop the user-specified profile image for WebUI

This patch fixes a bug where the user-specified profile image
wasn't cropped for WebUI thus the image was displayed weirdly
in the lock screen and the settings.

The root cause of the problem was that the original image data
bytes (not cropped, and can be big) were used for WebUI.

Along the way, get rid of UserImage.RecodedJpegSize UMA
because it's not defined in tools/metrics/histograms/histograms.xml

BUG= 590630 
TEST=follow steps in the bug

Review URL: https://codereview.chromium.org/1748423005

Cr-Commit-Position: refs/heads/master@{#380512}

[modify] https://crrev.com/5820ae933247dc363ba3ae51220acd64ba3488b0/chrome/browser/chromeos/login/users/avatar/user_image_loader.cc
[modify] https://crrev.com/5820ae933247dc363ba3ae51220acd64ba3488b0/chrome/browser/chromeos/login/users/avatar/user_image_manager_impl.cc
[modify] https://crrev.com/5820ae933247dc363ba3ae51220acd64ba3488b0/components/user_manager/user_image/user_image.cc
[modify] https://crrev.com/5820ae933247dc363ba3ae51220acd64ba3488b0/components/user_manager/user_image/user_image.h

forgot to close.