Rebaseline WebAudio tests on Android

BUG=
R=peter@chromium.org

Review URL: https://codereview.chromium.org/23680008

git-svn-id: svn://svn.chromium.org/blink/trunk@157138 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Consider "mixed content XHR" as mixed script instead of mixed display.

Second attempt.  The first attempt at https://codereview.chromium.org/14619021/
was reverted because it was over-aggressive: it could not distinguish between
raw XHR requests and other RAW (audio/video) request.

This CL adds a new flag to ResourceLoaderOptions to distinguish the two
cases, and check this in ResourceFetcher.cpp.  DocumentThreadableLoader's
sync case is then made to use the new checking code in ResourceFetcher in
place of its own check.

BUG=239540

Review URL: https://chromiumcodereview.appspot.com/23437013

git-svn-id: svn://svn.chromium.org/blink/trunk@157139 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[Android WebView] Treat zero values in viewport arguments specially

For compatibility with the old WebView, zero values in viewport
arguments must not be clamped. Zero values for "width" and "height"
must be interpreted as "device-width" and "device-height", respectively;
and zero "initial-scale" translates into 100%.

BUG=282130

Review URL: https://chromiumcodereview.appspot.com/23691017

git-svn-id: svn://svn.chromium.org/blink/trunk@157140 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Move xxd.pl script to core/scripts as its used by other core components like XMLTreeViewer

xxd.pl is used outside the inspector specifically by the core/xml/parser/XMLDocumentParser and 
XMLTreeViewer. Hence moving it to core/scripts for generic usage if required.

R=pfeldman

Review URL: https://chromiumcodereview.appspot.com/23583012

git-svn-id: svn://svn.chromium.org/blink/trunk@157141 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Gardening: Mark one test as flaky.

virtual/threaded/animations/animation-events-prefixed-03.html is flaky in Debug.

BUG=284531
TBR=tkent@chromium.org

Review URL: https://codereview.chromium.org/23530015

git-svn-id: svn://svn.chromium.org/blink/trunk@157142 bbb929c8-8fbe-4397-9dbb-9b2b20218538