Implement suspend() and resume() for OfflineAudioContext

third_party/WebKit/LayoutTests/webaudio/offlineaudiocontext-suspend-resume-basic-expected.txt

Index: third_party/WebKit/LayoutTests/webaudio/offlineaudiocontext-suspend-resume-basic-expected.txt
diff --git a/third_party/WebKit/LayoutTests/webaudio/offlineaudiocontext-suspend-resume-basic-expected.txt b/third_party/WebKit/LayoutTests/webaudio/offlineaudiocontext-suspend-resume-basic-expected.txt
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index 0000000000000000000000000000000000000000..886c886b1138ff71ed593cf9ed379585ee42ab3a
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+++ b/third_party/WebKit/LayoutTests/webaudio/offlineaudiocontext-suspend-resume-basic-expected.txt
@@ -0,0 +1,15 @@
+Basic test for OfflineAudioContext.suspend() and OfflineAudioContext.resume().
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS context.suspend() rejected correctly (with TypeError: Failed to execute 'suspend' on 'OfflineAudioContext': 1 argument required, but only 0 present.).
+PASS context.suspend(-1.0) rejected correctly (with InvalidStateError: negative suspend time (-1) is not allowed).
+PASS Scheduling a suspend in the past rejected correctly (with InvalidStateError: cannot schedule a suspend at frame 17536 (0.399229 seconds) because it is earlier than the current frame of 22016 (0.499229 seconds)).
+PASS Calling multiple suspends at the same rendering quantum rejected correctly (with InvalidStateError: cannot schedule more than one suspend at frame 128 (0.00435374 seconds)).

[Raymond Toy, 2015/10/19 20:27:27]

Might be a little more informative if this test consisted of several PASS
messages.  The first can be something like

PASS suspend(<time1>) succeeded
PASS suspend(<time2>) correctly rejected (with...)

(Actual messages may vary to make it clearer.)

[hongchan, 2015/10/20 22:03:06]

Done.

+PASS Resuming before suspend rejected correctly (with InvalidStateError: cannot resume a context that is not suspended).
+PASS Calling resume on non-suspended context rejected correctly (with InvalidStateError: cannot resume a context that has not started).
+PASS successfullyParsed is true
+
+TEST COMPLETE
+