Add feedback uploader to upload reports in a sequenced manner with retries.
This is the first part of the CL that will enable re-sending feedback reports that were sent when the user was offline, across sessions.

R=jcivelli@chromium.org, zork@chromium.org
BUG=249853

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=241962

Review URL: https://codereview.chromium.org/116863002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242069 0039d316-1c4b-4281-b951-d872f2087c98
Don't redraw plugin windows on moving when using gpu browser compositor

Plugin windows are redrawn after EndDeferWindowPos call anyway.
Redrawing in SetWindowRgn causes plugin windows to be drawn on browser chrome.

BUG=

Review URL: https://codereview.chromium.org/118163003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242070 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242070