Reland attempt 2: Improve <webview> autosize:

Reland attempt 2: Improve <webview> autosize:

a. Expand/shrink <webview> element when 'sizechange' event fires, to
match with the new view size (in shim).
b. For SW mode, fix a bug where damage buffer would remain smaller than
the view size and would result in crash. Added test for this case.

BUG=173238, 282116
Test=WebViewTest.AutoSize.*, <webview>.autosize=true now should autosize
webview container within the constraints
(minwidth/maxwidth/minheight/maxheight).

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=221402

[lazyboy, 2013-09-04 19:24:20]

Charlie, can you rubberstamp this reland CL?
(OWNERS for content/renderer/browser_plugin/* and
content/browser/browser_plugin/*)
Patchset #1 was the reverted CL (http://crrev.com/23503023), Patchset #2 is with
minor fix in the failing test.

[Charlie Reis, 2013-09-04 20:04:42]

Rubber stamp LGTM for content/.  You'll probably need an owner's review for
chrome/.

[lazyboy, 2013-09-04 20:09:31]

On 2013/09/04 20:04:42, creis wrote:
> Rubber stamp LGTM for content/.  You'll probably need an owner's review for
> chrome/.

I am in OWNERS for the chrome/ files I touched, so should be good.
Thanks for the review.

[commit-bot: I haz the power, 2013-09-05 01:16:31]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/lazyboy@chromium.org/23691039/14001

[commit-bot: I haz the power, 2013-09-05 01:39:16]

Sorry for I got bad news for ya.
Compile failed with a clobber build on linux_chromeos.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_chro...
Your code is likely broken or HEAD is junk. Please ensure your
code is not broken then alert the build sheriffs.
Look at the try server FAQ for more details.

[commit-bot: I haz the power, 2013-09-05 07:47:52]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/lazyboy@chromium.org/23691039/14001

[commit-bot: I haz the power, 2013-09-05 13:16:36]

Change committed as 221402