Android: fixes SDK version checking when provisioning devices.

The system_properties is a string.

BUG=348992

Review URL: https://codereview.chromium.org/186623003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255029 0039d316-1c4b-4281-b951-d872f2087c98
[Android] Always insert a TouchCancel if window or tab focus is lost

This fixes a recent regression where loss of tab focus would cancel a gesture
sequence, but not the generating touch sequence.  Resolve this by inserting a
synthetic touch cancellation event into the pipeline, which will cause
cancellation of both touch and gesture sequences.

BUG=348528

Review URL: https://codereview.chromium.org/178193022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255030 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255030