Set the web view's resize background color to transparent.

Set the web view's resize background color to transparent.

The issue was that NativeViewHost fills the background with WHITE
(default color) if the clipping window is installed. This was
for fast resize scenario (resizing the view without resizing nativ
view), but this also appends when native view gets clipped (which
happens when you scroll).

While it's a bit sounds wrong to set the resize background color
even if you're not resizing, this is simplest solution.

BUG=None

Review-Url: https://codereview.chromium.org/2969523002
Cr-Commit-Position: refs/heads/master@{#486817}
Committed: https://chromium.googlesource.com/chromium/src/+/d72f2eac28ff9bd62a312ef7efebb511fab56277

[oshima, 2017-06-29 20:41:50]

oshima@chromium.org changed reviewers:
+ vadimt@chromium.org

[vadimt, 2017-07-11 00:38:57]

lgtm

Oh, super-cool; thanks!

[oshima, 2017-07-11 16:24:07]

oshima@chromium.org changed reviewers:
+ jennyz@chromium.org

[oshima, 2017-07-11 16:24:07]

jennyz@ for owner's review

[jennyz, 2017-07-13 22:24:52]

lgtm

[oshima, 2017-07-14 17:30:08]

The CQ bit was checked by oshima@chromium.org

[commit-bot: I haz the power, 2017-07-14 17:30:19]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-07-14 18:31:04]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1500053408272470, "parent_rev":
"778d2ced6a3175d0fd9672bb34e22480548dd543", "commit_rev":
"d72f2eac28ff9bd62a312ef7efebb511fab56277"}

[commit-bot: I haz the power, 2017-07-14 18:31:22]

Description was changed from

==========
Set the web view's resize background color to transparent.

The issue was that NativeViewHost fills the background with WHITE
(default color) if the clipping window is installed. This was
for fast resize scenario (resizing the view without resizing nativ
view), but this also appends when native view gets clipped (which
happens when you scroll).

While it's a bit sounds wrong to set the resize background color
even if you're not resizing, this is simplest solution.

BUG=None
==========

to

==========
Set the web view's resize background color to transparent.

The issue was that NativeViewHost fills the background with WHITE
(default color) if the clipping window is installed. This was
for fast resize scenario (resizing the view without resizing nativ
view), but this also appends when native view gets clipped (which
happens when you scroll).

While it's a bit sounds wrong to set the resize background color
even if you're not resizing, this is simplest solution.

BUG=None

Review-Url: https://codereview.chromium.org/2969523002
Cr-Commit-Position: refs/heads/master@{#486817}
Committed:
https://chromium.googlesource.com/chromium/src/+/d72f2eac28ff9bd62a312ef7efeb...
==========

[commit-bot: I haz the power, 2017-07-14 18:31:24]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/d72f2eac28ff9bd62a312ef7efeb...