Remove noteOn and noteOff methods from OscillatorNode

The WebAudio spec removed these methods a year ago in favor of start
and stop.  Chrome had removed these methods for
AudioBuffserSourceNodes, but not OscillatorNodes.

BUG=430995
TESTS=dom-exceptions updated

Review URL: https://codereview.chromium.org/707753006

git-svn-id: svn://svn.chromium.org/blink/trunk@185070 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/webaudio/dom-exceptions-expected.txt

@@ -127,6 +127,10 @@ PASS script.channelCountMode = 'explicit' did not throw exception.
 PASS script.channelCountMode = 'max' threw exception NotSupportedError: Failed to set the 'channelCountMode' property on 'AudioNode': channelCountMode cannot be changed from 'explicit' to 'max'.
 PASS script.channelCountMode = 'clamped-max' threw exception NotSupportedError: Failed to set the 'channelCountMode' property on 'AudioNode': channelCountMode cannot be changed from 'explicit' to 'clamped-max'.
 PASS script.channelCountMode = 'junk' did not throw exception.
+PASS osc.noteOn is undefined.
+PASS osc.noteOff is undefined.
+PASS source.noteOn is undefined.
+PASS source.noteOff is undefined.
 PASS successfullyParsed is true
 
 TEST COMPLETE

third_party/WebKit/LayoutTests/webaudio/dom-exceptions.html

@@ -248,6 +248,12 @@ function runTest() {
     shouldThrow("script.channelCountMode = 'max'");
     shouldThrow("script.channelCountMode = 'clamped-max'");
     shouldNotThrow("script.channelCountMode = 'junk'");
+
+    // noteOn and noteOff don't exist anymore
+    shouldBeUndefined("osc.noteOn");
+    shouldBeUndefined("osc.noteOff");
+    shouldBeUndefined("source.noteOn");
+    shouldBeUndefined("source.noteOff");
 }
 
 runTest();

third_party/WebKit/Source/modules/webaudio/OscillatorNode.idl

@@ -43,9 +43,6 @@ enum OscillatorType {
     [RaisesException] void start(optional double when);
     [RaisesException] void stop(optional double when);
 
-    [RaisesException, ImplementedAs=start] void noteOn(double when);
-    [RaisesException, ImplementedAs=stop] void noteOff(double when);
-
     void setPeriodicWave(PeriodicWave periodicWave);
 
     attribute EventHandler onended;