Don't close ExtensionPopups on child window focus (Win, non-Aura).

Don't close ExtensionPopups on child window focus (Win, non-Aura).
Fixes crash on JS dialog popups from the extension bubbles.

Check for child HWND in WidgetFocusChangeListener::OnNativeFocusChange.
Code from BubbleWidget in browser_bubble_win.cc (crrev.com/112278)

See Issue 106958 for Aura, the dialog&bubble close early without crashing.

BUG=106723, 106958
TEST=The js alert extension attached to the issue doesn't crash, popup works on non-aura.

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=113936

[msw, 2011-12-09 09:12:20]

Please take a look; thanks! I'll fix Aura in a followup for crbug.com/106958;
not sure how to check window hierarchy there yet.

[Matt Perry, 2011-12-09 19:51:58]

lgtm, thanks!

[commit-bot: I haz the power, 2011-12-10 00:03:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/8879045/8001

[commit-bot: I haz the power, 2011-12-10 00:03:56]

Presubmit check for 8879045-8001 failed and returned exit status 1.

Running presubmit commit checks ...

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Missing LGTM from an OWNER for: ui/views/focus/widget_focus_manager.cc

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[msw, 2011-12-10 00:12:16]

+Sky for OWNERS ui/views/focus/widget_focus_manager.cc

[sky, 2011-12-10 00:19:58]

LGTM

[commit-bot: I haz the power, 2011-12-10 00:23:48]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/msw@chromium.org/8879045/8001

[commit-bot: I haz the power, 2011-12-10 03:57:34]

Change committed as 113936