Construct and check for mojo::Event's LocationData as needed.

Construct and check for mojo::Event's LocationData as needed.

The location struct replaced |x| and |y| basic types by:
  https://codereview.chromium.org/1313353010
I audited pointer_data, wheel_data, and brush_data use too.

BUG=534982
TEST=No crashes running view_manager_unittests locally.
R=rjkroege@chromium.org
TBR=sky@chromium.org

Committed: https://crrev.com/b143a367f667fa8608ab3286a74fc78fd704323d
Cr-Commit-Position: refs/heads/master@{#350265}

[msw, 2015-09-22 22:41:17]

Hey Robert, please take a look; thanks!

[rjkroege, 2015-09-22 22:52:42]

lgtm

https://codereview.chromium.org/1362793002/diff/20001/components/pdf_viewer/p...
File components/pdf_viewer/pdf_viewer.cc (right):

https://codereview.chromium.org/1362793002/diff/20001/components/pdf_viewer/p...
components/pdf_viewer/pdf_viewer.cc:388: (event->wheel_data &&
event->wheel_data->delta_y < 0)) {

my oops.

[msw, 2015-09-22 22:55:24]

msw@chromium.org changed reviewers:
+ sky@chromium.org

[msw, 2015-09-22 22:55:55]

+TBR Scott for OWNERS; landing.

[msw, 2015-09-22 22:56:00]

The CQ bit was checked by msw@chromium.org

[commit-bot: I haz the power, 2015-09-22 22:58:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1362793002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1362793002/20001

[sky, 2015-09-22 23:04:18]

LGTM

[commit-bot: I haz the power, 2015-09-22 23:45:23]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-09-22 23:46:44]

Patchset 2 (id:??) landed as
https://crrev.com/b143a367f667fa8608ab3286a74fc78fd704323d
Cr-Commit-Position: refs/heads/master@{#350265}