Merge "print_preview: Workaround of focus-scroll issue." to M51

Merge "print_preview: Workaround of focus-scroll issue." to M51

* Make margin-control-textbox elements unfocusable if not in custom margin mode.

* Reset the scroll position of preview-area when margin-control-textbox is
  focused.

BUG=601341
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/1917413002
Cr-Commit-Position: refs/heads/master@{#390902}
(cherry picked from commit dedbae45b850e09e8de724bc678cbec27a7ed6c8)

Committed: https://chromium.googlesource.com/chromium/src/+/9e9ef8f9049d13aea9310d16ecc145b24becbc3b

[tkent, 2016-05-05 23:24:36]

Description was changed from

==========
Merge "print_preview: Workaround of focus-scroll issue." to M51

* Make margin-control-textbox elements unfocusable if not in custom margin mode.

* Reset the scroll position of preview-area when margin-control-textbox is
  focused.

BUG=601341
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/1917413002
Cr-Commit-Position: refs/heads/master@{#390902}
(cherry picked from commit dedbae45b850e09e8de724bc678cbec27a7ed6c8)
==========

to

==========
Merge "print_preview: Workaround of focus-scroll issue." to M51

* Make margin-control-textbox elements unfocusable if not in custom margin mode.

* Reset the scroll position of preview-area when margin-control-textbox is
  focused.

BUG=601341
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/1917413002
Cr-Commit-Position: refs/heads/master@{#390902}
(cherry picked from commit dedbae45b850e09e8de724bc678cbec27a7ed6c8)

Committed:
https://chromium.googlesource.com/chromium/src/+/9e9ef8f9049d13aea9310d16ecc1...
==========

[tkent, 2016-05-05 23:24:39]

Committed patchset #1 (id:1) manually as
9e9ef8f9049d13aea9310d16ecc145b24becbc3b.