Fix a regression caused by the background fullscreen handling code.

Fix a regression caused by the background fullscreen handling code.

Merging to M52

For context please refer to this patch https://codereview.chromium.org/1707233002

If a background fullscreen window's size changes again due to a minimize
operation, we do inform the delegate about the size change. However during
an activation gain if the background_fullscreen_hack_ flag is set we don't
inform the delegate about the restored size (fullscreen) which leads to this bug

Fix is to inform the delegate if the sent_window_size_changing_ flag is
set in this case.

BUG=613461
Review-Url: https://codereview.chromium.org/2007513004
Cr-Commit-Position: refs/heads/master@{#395666}
(cherry picked from commit bda15a4588989436424bc74b05d6aad9c44b41df)

Committed: https://chromium.googlesource.com/chromium/src/+/97690fc7759349821e04633c8b48542b54d6ba34

[ananta, 2016-06-28 03:34:55]

Description was changed from

==========
Fix a regression caused by the background fullscreen handling code.

Merging to M52

For context please refer to this patch
https://codereview.chromium.org/1707233002

If a background fullscreen window's size changes again due to a minimize
operation, we do inform the delegate about the size change. However during
an activation gain if the background_fullscreen_hack_ flag is set we don't
inform the delegate about the restored size (fullscreen) which leads to this bug

Fix is to inform the delegate if the sent_window_size_changing_ flag is
set in this case.

BUG=613461

Review-Url: https://codereview.chromium.org/2007513004
Cr-Commit-Position: refs/heads/master@{#395666}
(cherry picked from commit bda15a4588989436424bc74b05d6aad9c44b41df)
==========

to

==========
Fix a regression caused by the background fullscreen handling code.

Merging to M52

For context please refer to this patch
https://codereview.chromium.org/1707233002

If a background fullscreen window's size changes again due to a minimize
operation, we do inform the delegate about the size change. However during
an activation gain if the background_fullscreen_hack_ flag is set we don't
inform the delegate about the restored size (fullscreen) which leads to this bug

Fix is to inform the delegate if the sent_window_size_changing_ flag is
set in this case.

BUG=613461

Review-Url: https://codereview.chromium.org/2007513004
Cr-Commit-Position: refs/heads/master@{#395666}
(cherry picked from commit bda15a4588989436424bc74b05d6aad9c44b41df)

Committed:
https://chromium.googlesource.com/chromium/src/+/97690fc7759349821e04633c8b48...
==========

[ananta, 2016-06-28 03:34:57]

Committed patchset #1 (id:1) manually as
97690fc7759349821e04633c8b48542b54d6ba34 (tree was closed).