Add constructors for WebAudio nodes

third_party/WebKit/Source/modules/webaudio/PeriodicWave.h

Index: third_party/WebKit/Source/modules/webaudio/PeriodicWave.h
diff --git a/third_party/WebKit/Source/modules/webaudio/PeriodicWave.h b/third_party/WebKit/Source/modules/webaudio/PeriodicWave.h
index 1e34ba64d5ab7873e5ec4d0416e605a5dbd9f80d..1c045a29b1eef08da4c7514fec5829c17fa976c4 100644
--- a/third_party/WebKit/Source/modules/webaudio/PeriodicWave.h
+++ b/third_party/WebKit/Source/modules/webaudio/PeriodicWave.h
@@ -40,6 +40,7 @@ namespace blink {
 
 class BaseAudioContext;
 class ExceptionState;
+class PeriodicWaveOptions;
 
 class PeriodicWave final : public GarbageCollectedFinalized<PeriodicWave>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
@@ -52,11 +53,22 @@ public:
     // Creates an arbitrary periodic wave given the frequency components (Fourier coefficients).
     static PeriodicWave* create(
         BaseAudioContext&,
+        size_t realLength,
+        const float* real,
+        size_t imagLength,
+        const float* imag,
+        bool normalize,
+        ExceptionState&);
+
+    static PeriodicWave* create(
+        BaseAudioContext&,
         DOMFloat32Array* real,
         DOMFloat32Array* imag,
         bool normalize,
         ExceptionState&);
 
+    static PeriodicWave* create(BaseAudioContext*, const PeriodicWaveOptions&, ExceptionState&);
+
     virtual ~PeriodicWave();
 
     // Returns pointers to the lower and higher wave data for the pitch range containing