Android: Make ContentViewCore's layer a SolidColorLayer

Android: Make ContentViewCore's layer a SolidColorLayer

Change ContentViewCore's container layer to be a SolidColorLayer
that uses the view's background color and physical dimensions.
But only make it drawable as long as there is no RenderView or
we don't have a frame yet to avoid any potential draw (or drawcalc)
overhead.

NOTRY=True

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=268530

[no sievers, 2014-05-05 21:31:35]

ptal

[no sievers, 2014-05-05 21:35:38]

https://codereview.chromium.org/264113003/diff/1/content/public/android/java/...
File
content/public/android/java/src/org/chromium/content/browser/ContentViewRenderView.java
(left):

https://codereview.chromium.org/264113003/diff/1/content/public/android/java/...
content/public/android/java/src/org/chromium/content/browser/ContentViewRenderView.java:250:
return;
Regarding |mContentViewCore == null| dtrainor and I were thinking that this
should really be the responsibility of the app to either have a valid native
background or layer when there is no ContentViewCore with its layer(s).

I didn't see this patch cause a regression in that regard, so didn't make any
other changes for that so far.

[David Trainor- moved to gerrit, 2014-05-05 22:07:41]

lgtm

[no sievers, 2014-05-06 01:27:51]

+Ted for OWNERS

[Sami, 2014-05-06 14:53:12]

lgtm, and agreed w.r.t. |mContentViewCore == null|.

[Ted C, 2014-05-06 15:11:56]

lgtm

[no sievers, 2014-05-06 16:23:20]

The CQ bit was checked by sievers@chromium.org

[no sievers, 2014-05-06 16:23:22]

The CQ bit was unchecked by sievers@chromium.org

[no sievers, 2014-05-06 16:23:42]

The CQ bit was checked by sievers@chromium.org

[commit-bot: I haz the power, 2014-05-06 16:23:56]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/sievers@chromium.org/264113003/20001

[commit-bot: I haz the power, 2014-05-06 16:25:19]

Change committed as 268530