AudioBufferSourceNode.buffer can only be set once.

LayoutTests/webaudio/dom-exceptions-expected.txt

Index: LayoutTests/webaudio/dom-exceptions-expected.txt
diff --git a/LayoutTests/webaudio/dom-exceptions-expected.txt b/LayoutTests/webaudio/dom-exceptions-expected.txt
index 8d9cee746feb2282947acc3bd6a465589a696399..fb4e9b6deb0eb4f7376fdd6f979ae2b27c1aecb4 100644
--- a/LayoutTests/webaudio/dom-exceptions-expected.txt
+++ b/LayoutTests/webaudio/dom-exceptions-expected.txt
@@ -1,3 +1,4 @@
+CONSOLE WARNING: Setting AudioBufferSourceNode.buffer more than once is deprecated and will no longer work in Chrome 43.
 Tests DOM exception messages
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
@@ -72,6 +73,7 @@ PASS node.curve = new Float32Array(2) did not throw exception.
 PASS node.curve = null did not throw exception.
 PASS source = context.createBufferSource() did not throw exception.
 PASS source.buffer = buffer did not throw exception.
+PASS source.buffer = context.createBuffer(1, 10, context.sampleRate) did not throw exception.
 PASS source.start(-1) threw exception InvalidAccessError: Failed to execute 'start' on 'AudioBufferSourceNode': Start time must be a finite non-negative number: -1.
 PASS source.start(Infinity) threw exception InvalidAccessError: Failed to execute 'start' on 'AudioBufferSourceNode': Start time must be a finite non-negative number: Infinity.
 PASS source.start(-Infinity) threw exception InvalidAccessError: Failed to execute 'start' on 'AudioBufferSourceNode': Start time must be a finite non-negative number: -Infinity.