Remove OnSuspend/OnResume notifications on Android.

Remove OnSuspend/OnResume notifications on Android.

These are incorrectly mixing disparate concepts. Chrome code expects
OnSuspend/OnResume to mean the system is about to go to sleep, not
just that there is no more visible activity.

This prevents background tasks like background audio from working
properly since the network connections are force killed. We could
workaround this by improving when OnSuspend/OnResume is sent, but
it seems no one really cares, so just delete these.

In fact a couple pieces of code explicitly reject OnSupend/OnResume
from Android since they do not mean what is expected. An alternate
signal for app suspension should be sent if this is ever needed
again in the future.

BUG=644515
TEST=background audio playback works.

Review-Url: https://codereview.chromium.org/2324923002
Cr-Commit-Position: refs/heads/master@{#417691}
(cherry picked from commit 610004f26299d1eb31b18f7dce3e2d3740eb8c04)

Committed: https://chromium.googlesource.com/chromium/src/+/9ea1d94129fd5eb34437c3d3f0dccee91e7d0e3f

[DaleCurtis, 2016-09-26 22:12:33]

Description was changed from

==========
Remove OnSuspend/OnResume notifications on Android.

These are incorrectly mixing disparate concepts. Chrome code expects
OnSuspend/OnResume to mean the system is about to go to sleep, not
just that there is no more visible activity.

This prevents background tasks like background audio from working
properly since the network connections are force killed. We could
workaround this by improving when OnSuspend/OnResume is sent, but
it seems no one really cares, so just delete these.

In fact a couple pieces of code explicitly reject OnSupend/OnResume
from Android since they do not mean what is expected. An alternate
signal for app suspension should be sent if this is ever needed
again in the future.

BUG=644515
TEST=background audio playback works.

Review-Url: https://codereview.chromium.org/2324923002
Cr-Commit-Position: refs/heads/master@{#417691}
(cherry picked from commit 610004f26299d1eb31b18f7dce3e2d3740eb8c04)
==========

to

==========
Remove OnSuspend/OnResume notifications on Android.

These are incorrectly mixing disparate concepts. Chrome code expects
OnSuspend/OnResume to mean the system is about to go to sleep, not
just that there is no more visible activity.

This prevents background tasks like background audio from working
properly since the network connections are force killed. We could
workaround this by improving when OnSuspend/OnResume is sent, but
it seems no one really cares, so just delete these.

In fact a couple pieces of code explicitly reject OnSupend/OnResume
from Android since they do not mean what is expected. An alternate
signal for app suspension should be sent if this is ever needed
again in the future.

BUG=644515
TEST=background audio playback works.

Review-Url: https://codereview.chromium.org/2324923002
Cr-Commit-Position: refs/heads/master@{#417691}
(cherry picked from commit 610004f26299d1eb31b18f7dce3e2d3740eb8c04)

Committed:
https://chromium.googlesource.com/chromium/src/+/9ea1d94129fd5eb34437c3d3f0dc...
==========

[DaleCurtis, 2016-09-26 22:12:34]

Committed patchset #1 (id:1) manually as
9ea1d94129fd5eb34437c3d3f0dccee91e7d0e3f.