aura: Don't notify observers in Window::SetExternalTexture.

aura: Don't notify observers in Window::SetExternalTexture.

This removes the OnWindowPaintScheduled() notification from
aura::Window::SetExternalTexture().  Without this change,
the video detector thinks that small webpage updates have
modified the entire window and also double-counts updates
(SchedulePaintInRect() should be called afterwards in most
cases).

BUG=165071
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=175727

[Daniel Erat, 2013-01-08 22:38:07]

Flash is crashing in my local builds, but at least in the case of animated GIFs,
I can confirm that video activity is reported when a video-sized animation is
going and not when only a small part of the animation is onscreen.

[piman, 2013-01-08 23:21:57]

lgtm

[commit-bot: I haz the power, 2013-01-09 00:05:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/derat@chromium.org/11819012/1

[commit-bot: I haz the power, 2013-01-09 00:06:01]

Presubmit check for 11819012-1 failed and returned exit status 1.


Running presubmit commit checks ...

** Presubmit ERRORS **
Missing LGTM from an OWNER for files in these directories:
    ui/aura

[sky, 2013-01-09 00:47:55]

LGTM

[commit-bot: I haz the power, 2013-01-09 00:54:38]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/derat@chromium.org/11819012/1

[commit-bot: I haz the power, 2013-01-09 07:41:09]

Change committed as 175727