Implement StereoPannerNode for robust stereo panning

Source/modules/webaudio/StereoPannerNode.idl

Index: Source/modules/webaudio/StereoPannerNode.idl
diff --git a/LICENSE b/Source/modules/webaudio/StereoPannerNode.idl
similarity index 91%
copy from LICENSE
copy to Source/modules/webaudio/StereoPannerNode.idl
index 70bcb8ad118978579fa055f7ecc99604930900ce..1363f632ecca55e566df810b4a2ce03dbde1546c 100644
--- a/LICENSE
+++ b/Source/modules/webaudio/StereoPannerNode.idl
@@ -1,8 +1,5 @@
 // Copyright 2014 The Chromium Authors. All rights reserved.
 //
-// The Chromium Authors can be found at
-// http://src.chromium.org/svn/trunk/src/AUTHORS
-//
 // Redistribution and use in source and binary forms, with or without

[Raymond Toy, 2014/11/12 18:06:52]

The coding style indicates that the license header is just 3 lines long, and the
rest of this is not needed.

Be sure to do the same thing for all of the new files.

[hongchan, 2014/11/12 22:01:43]

Done.

 // modification, are permitted provided that the following conditions are
 // met:
@@ -28,3 +25,12 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+[
+    NoInterfaceObject,
+    Conditional=WEB_AUDIO
+] interface StereoPannerNode : AudioNode {
+
+    readonly attribute AudioParam pan;
+
+};