Reviewed by Dirk Pranke.

        Add Web Audio support to chromium DRT
        https://bugs.webkit.org/show_bug.cgi?id=62306

        * DumpRenderTree/chromium/LayoutTestController.cpp:
        (LayoutTestController::LayoutTestController):
        (LayoutTestController::reset):
        (LayoutTestController::setEncodedAudioData):
        * DumpRenderTree/chromium/LayoutTestController.h:
        (LayoutTestController::encodedAudioData):
        (LayoutTestController::shouldDumpAsAudio):
        (LayoutTestController::setShouldDumpAsAudio):
        * DumpRenderTree/chromium/TestEventPrinter.cpp:
        (DRTPrinter::handleAudioHeader):
        (TestShellPrinter::handleAudioHeader):
        * DumpRenderTree/chromium/TestEventPrinter.h:
        * DumpRenderTree/chromium/TestShell.cpp:
        (TestShell::TestShell):
        (TestShell::dump):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@88726 268f45cc-cd09-0410-ab3c-d52691b4dbfc