mus: Remove ViewportMetrics from mojom.

mus: Remove ViewportMetrics from mojom.

ViewportMetrics is no longer sent over IPC to the clients, so remove
it from the mojom. Also, simplify the usage a bit, for example, rename
'device pixel ratio' to 'device scale factor', since that's what the
rest of the code (in //ui/display and elsewhere) calls it. Also, remove
GetViewportMetrics() from PlatformDisplay and Display, and introduce
GetDeviceScaleFactor() on PlatformDisplay, since that was the only use
for it.

BUG=603316
Committed: https://crrev.com/21c4cdea43a46afbfec9b66455d7cbc35c0f041b
Cr-Commit-Position: refs/heads/master@{#396534}

[sadrul, 2016-05-27 16:33:32]

sadrul@chromium.org changed reviewers:
+ sky@chromium.org, tsepez@chromium.org

[sadrul, 2016-05-27 16:33:32]

tsepez@ for change in window_tree.mojom

sky@ for everything

[sky, 2016-05-27 16:46:08]

LGTM

[Tom Sepez, 2016-05-27 16:47:59]

lgtm

[sadrul, 2016-05-27 17:04:47]

The CQ bit was checked by sadrul@chromium.org

[commit-bot: I haz the power, 2016-05-27 17:05:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2021483002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2021483002/1

[commit-bot: I haz the power, 2016-05-27 17:18:05]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-05-27 17:18:06]

Try jobs failed on following builders:
  win8_chromium_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_ng/...)

[sadrul, 2016-05-27 18:17:56]

The CQ bit was checked by sadrul@chromium.org

[sadrul, 2016-05-27 18:17:56]

The patchset sent to the CQ was uploaded after l-g-t-m from tsepez@chromium.org,
sky@chromium.org
Link to the patchset: https://codereview.chromium.org/2021483002/#ps20001
(title: ".")

[commit-bot: I haz the power, 2016-05-27 18:18:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2021483002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2021483002/20001

[commit-bot: I haz the power, 2016-05-27 19:36:37]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-05-27 19:38:04]

Description was changed from

==========
mus: Remove ViewportMetrics from mojom.

ViewportMetrics is no longer sent over IPC to the clients, so remove
it from the mojom. Also, simplify the usage a bit, for example, rename
'device pixel ratio' to 'device scale factor', since that's what the
rest of the code (in //ui/display and elsewhere) calls it. Also, remove
GetViewportMetrics() from PlatformDisplay and Display, and introduce
GetDeviceScaleFactor() on PlatformDisplay, since that was the only use
for it.

BUG=603316
==========

to

==========
mus: Remove ViewportMetrics from mojom.

ViewportMetrics is no longer sent over IPC to the clients, so remove
it from the mojom. Also, simplify the usage a bit, for example, rename
'device pixel ratio' to 'device scale factor', since that's what the
rest of the code (in //ui/display and elsewhere) calls it. Also, remove
GetViewportMetrics() from PlatformDisplay and Display, and introduce
GetDeviceScaleFactor() on PlatformDisplay, since that was the only use
for it.

BUG=603316

Committed: https://crrev.com/21c4cdea43a46afbfec9b66455d7cbc35c0f041b
Cr-Commit-Position: refs/heads/master@{#396534}
==========

[commit-bot: I haz the power, 2016-05-27 19:38:05]

Patchset 2 (id:??) landed as
https://crrev.com/21c4cdea43a46afbfec9b66455d7cbc35c0f041b
Cr-Commit-Position: refs/heads/master@{#396534}