Skip update service and idle app notifications for demo app.

R=xiyuan@chromium.org
BUG=346570
TEST=Tested that the idle app notification does not come up for the demo app.

Review URL: https://codereview.chromium.org/181593008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254236 0039d316-1c4b-4281-b951-d872f2087c98
Remove SPDY4 RST_STREAM payload flag remnants.

Upstream flag allow_spdy_4_rst_stream_opaque_data has been deprecated.

This lands server change 62210395 by mlavan.

BUG=345769

Review URL: https://codereview.chromium.org/184713002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254237 0039d316-1c4b-4281-b951-d872f2087c98
sync: Move download logic into GetUpdatesProcessor

Moves more of the logic to build and process GetUpdates messages into
the GetUpdatesProcessor.  When refactoring the sync engine, some
functions ended up being left orphaned in download.h.  This CL gets them
back into a class.

This change should make the download updates logic a bit clearer, since
the most of the update request building, sending, and processing logic
will now live entirely in GetUpdatesProcessor and its helper class,
GetUpdatesDelegate.

BUG=278484

Review URL: https://codereview.chromium.org/174063003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254238 0039d316-1c4b-4281-b951-d872f2087c98
net: add (*.)mailbox.org to HSTS preloaded.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254239 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254237
Added the |findupdate| event to the <webview> find API as described in: https://docs.google.com/a/google.com/document/d/1n6Cggcc4-tXDNIbgbbLMPNU0yzpF3xvGgzdsWVTy_U0/edit?usp=sharing

Review URL: https://codereview.chromium.org/178333007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254240 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254239
SVN changes up to revision 254240