Revert of Sub-sample accurate start of OscillatorNode

third_party/WebKit/Source/modules/webaudio/ConstantSourceNode.cpp

Index: third_party/WebKit/Source/modules/webaudio/ConstantSourceNode.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/ConstantSourceNode.cpp b/third_party/WebKit/Source/modules/webaudio/ConstantSourceNode.cpp
index ce68569c9d7b66654933c5040fa36f25b6b4bab5..821419d0125c9f07afd506125e19d310c054946f 100644
--- a/third_party/WebKit/Source/modules/webaudio/ConstantSourceNode.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/ConstantSourceNode.cpp
@@ -58,12 +58,11 @@
 
   size_t quantumFrameOffset;
   size_t nonSilentFramesToProcess;
-  double startFrameOffset;
 
   // Figure out where in the current rendering quantum that the source is
   // active and for how many frames.
   updateSchedulingInfo(framesToProcess, outputBus, quantumFrameOffset,
-                       nonSilentFramesToProcess, startFrameOffset);
+                       nonSilentFramesToProcess);
 
   if (!nonSilentFramesToProcess) {
     outputBus->zero();