Fix the wrong candidate window on Mac OSX.

Fix the wrong candidate window on Mac OSX.

After http://crrev.com/dac0c7af14c29c9d8509b775d5044e5448b6263b,
renderer no longer capturing the composition bounds by default.
To receive the latest composition bounds from renderer, we need to
update the monitor state and it was done for aura platform in above
CL. This CL introduces the similar logic to RWHVM to fix the wrong
candidate window issue.

BUG=639552
Review-Url: https://codereview.chromium.org/2296623002
Cr-Commit-Position: refs/heads/master@{#417877}
(cherry picked from commit fbd66b59cd50bacb823d7aeb6396f32594583fb1)

Committed: https://chromium.googlesource.com/chromium/src/+/3c0e829d4ed12936c68a34ec918acaf4d9f7c0ef

[Seigo Nonaka, 2016-09-14 05:58:05]

Description was changed from

==========
Fix the wrong candidate window on Mac OSX.

After http://crrev.com/dac0c7af14c29c9d8509b775d5044e5448b6263b,
renderer no longer capturing the composition bounds by default.
To receive the latest composition bounds from renderer, we need to
update the monitor state and it was done for aura platform in above
CL. This CL introduces the similar logic to RWHVM to fix the wrong
candidate window issue.

BUG=639552

Review-Url: https://codereview.chromium.org/2296623002
Cr-Commit-Position: refs/heads/master@{#417877}
(cherry picked from commit fbd66b59cd50bacb823d7aeb6396f32594583fb1)
==========

to

==========
Fix the wrong candidate window on Mac OSX.

After http://crrev.com/dac0c7af14c29c9d8509b775d5044e5448b6263b,
renderer no longer capturing the composition bounds by default.
To receive the latest composition bounds from renderer, we need to
update the monitor state and it was done for aura platform in above
CL. This CL introduces the similar logic to RWHVM to fix the wrong
candidate window issue.

BUG=639552

Review-Url: https://codereview.chromium.org/2296623002
Cr-Commit-Position: refs/heads/master@{#417877}
(cherry picked from commit fbd66b59cd50bacb823d7aeb6396f32594583fb1)

Committed:
https://chromium.googlesource.com/chromium/src/+/3c0e829d4ed12936c68a34ec918a...
==========

[Seigo Nonaka, 2016-09-14 05:58:08]

Committed patchset #1 (id:1) manually as
3c0e829d4ed12936c68a34ec918acaf4d9f7c0ef.