[Oilpan] Unify memory usage reporters of Oilpan

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

Index: third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp b/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp
index db4c8b2cc9a016be3fa4e516175edb83966d166c..bc915f418b15bc99722a4657a6c4260522eab69d 100644
--- a/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/PeriodicWave.cpp
@@ -87,8 +87,7 @@ PeriodicWave* PeriodicWave::createTriangle(float sampleRate)
 }
 
 PeriodicWave::PeriodicWave(float sampleRate)
-    : m_v8ExternalMemory(0)
-    , m_sampleRate(sampleRate)
+    : m_sampleRate(sampleRate)
     , m_centsPerRange(CentsPerRange)
 {
     float nyquist = 0.5 * m_sampleRate;
@@ -101,7 +100,6 @@ PeriodicWave::PeriodicWave(float sampleRate)
 
 PeriodicWave::~PeriodicWave()
 {
-    adjustV8ExternalMemory(-static_cast<int64_t>(m_v8ExternalMemory));
 }
 
 unsigned PeriodicWave::periodicWaveSize() const
@@ -168,13 +166,6 @@ unsigned PeriodicWave::numberOfPartialsForRange(unsigned rangeIndex) const
     return numberOfPartials;
 }
 
-// Tell V8 about the memory we're using so it can properly schedule garbage collects.
-void PeriodicWave::adjustV8ExternalMemory(int delta)
-{
-    v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(delta);
-    m_v8ExternalMemory += delta;
-}
-
 // Convert into time-domain wave buffers.
 // One table is created for each range for non-aliasing playback at different playback rates.
 // Thus, higher ranges have more high-frequency partials culled out.
@@ -223,7 +214,6 @@ void PeriodicWave::createBandLimitedTables(const float* realData, const float* i
         // Create the band-limited table.
         unsigned waveSize = periodicWaveSize();
         OwnPtr<AudioFloatArray> table = adoptPtr(new AudioFloatArray(waveSize));
-        adjustV8ExternalMemory(waveSize * sizeof(float));
         m_bandLimitedTables.append(table.release());
 
         // Apply an inverse FFT to generate the time-domain table data.
@@ -328,4 +318,3 @@ void PeriodicWave::generateBasicWaveform(int shape)
 }
 
 } // namespace blink
-