NaCl docs: Add instructions for how to debug a PNaCl pexe

Tweak the ToC so that the new subheadings appear in it.

BUG=none
TEST="make" in native_client_sdk/src/doc

Review URL: https://codereview.chromium.org/68893021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236081 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236081
Stop NaN Android touch orientation values from propagating

Report a rotationAngle of 0 for TouchEvents when the orientation reported
by the Android MotionEvent is NaN.

BUG=321299
NOTRY=true

Review URL: https://codereview.chromium.org/68643008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236082 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236082