Use frames instead of time for running AudioParam timelines.

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

Index: third_party/WebKit/Source/modules/webaudio/AudioParamTimeline.h
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioParamTimeline.h b/third_party/WebKit/Source/modules/webaudio/AudioParamTimeline.h
index 42f5bda9d74265de82e627875853d51a307c76db..7c00a8ed2cfb07e1d86323b17b881444017be2c9 100644
--- a/third_party/WebKit/Source/modules/webaudio/AudioParamTimeline.h
+++ b/third_party/WebKit/Source/modules/webaudio/AudioParamTimeline.h
@@ -60,7 +60,7 @@ public:
     // controlRate is the rate (number per second) at which parameter values will be calculated.
     // It should equal sampleRate for sample-accurate parameter changes, and otherwise will usually match
     // the render quantum size such that the parameter value changes once per render quantum.
-    float valuesForTimeRange(double startTime, double endTime, float defaultValue, float* values, unsigned numberOfValues, double sampleRate, double controlRate);
+    float valuesForTimeRange(size_t startTime, size_t endTime, float defaultValue, float* values, unsigned numberOfValues, double sampleRate, double controlRate);

[hongchan, 2015/09/30 22:14:18]

size_t startFrame, size_t endFrame

[Raymond Toy, 2015/10/01 18:05:55]

Done

 
     bool hasValues() { return m_events.size(); }
 
@@ -103,7 +103,7 @@ private:
     };
 
     void insertEvent(const ParamEvent&, ExceptionState&);
-    float valuesForTimeRangeImpl(double startTime, double endTime, float defaultValue, float* values, unsigned numberOfValues, double sampleRate, double controlRate);
+    float valuesForTimeRangeImpl(size_t startTime, size_t endTime, float defaultValue, float* values, unsigned numberOfValues, double sampleRate, double controlRate);

[hongchan, 2015/09/30 22:14:18]

Same as above.

 
     // Produce a nice string describing the event in human-readable form.
     String eventToString(const ParamEvent&);