Delete deprecated header file.

It was moved to platform/WebArrayBuffer.h and all references are now gone.

BUG=245025
R=abarth@chromium.org

Review URL: https://codereview.chromium.org/19490003

git-svn-id: svn://svn.chromium.org/blink/trunk@154442 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Add notes about other webkitpy thirdparty checked-in libraries.

This provides a bit more of a paper trail for the libraries we
already had checked in, and makes things a bit more consistent
with how we track stuff elsewhere in chromium.

(This patch depends on https://codereview.chromium.org/19481002/ ).

R=ojan@chromium.org
BUG=230706

Review URL: https://codereview.chromium.org/19484002

git-svn-id: svn://svn.chromium.org/blink/trunk@154443 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[SVG] Refactoring accumulate logic for animateMotion

made some changes to simplify the logic for accumulation

R=pdr@chromium.org, schenney@chromium.org, dschulze@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/19500005

git-svn-id: svn://svn.chromium.org/blink/trunk@154444 bbb929c8-8fbe-4397-9dbb-9b2b20218538