Use correct FFT scaling for WebAudio AnalyserNode

LayoutTests/webaudio/realtimeanalyser-fft-scaling-expected.txt

Index: LayoutTests/webaudio/realtimeanalyser-fft-scaling-expected.txt
diff --git a/LayoutTests/webaudio/realtimeanalyser-fft-scaling-expected.txt b/LayoutTests/webaudio/realtimeanalyser-fft-scaling-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..442de878a2643c8fc15337f993e9fd915d843f17
--- /dev/null
+++ b/LayoutTests/webaudio/realtimeanalyser-fft-scaling-expected.txt
@@ -0,0 +1,30 @@
+Test scaling of FFT data for AnalyserNode
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+PASS Actual FFT peak in the expected position (1)
+PASS Peak value is near 0 dBFS as expected
+PASS Analyser correctly scaled FFT data of size 32
+PASS Actual FFT peak in the expected position (2)
+PASS Peak value is near 0 dBFS as expected
+PASS Analyser correctly scaled FFT data of size 64
+PASS Actual FFT peak in the expected position (4)
+PASS Peak value is near 0 dBFS as expected
+PASS Analyser correctly scaled FFT data of size 128
+PASS Actual FFT peak in the expected position (8)
+PASS Peak value is near 0 dBFS as expected
+PASS Analyser correctly scaled FFT data of size 256
+PASS Actual FFT peak in the expected position (16)
+PASS Peak value is near 0 dBFS as expected
+PASS Analyser correctly scaled FFT data of size 512
+PASS Actual FFT peak in the expected position (32)
+PASS Peak value is near 0 dBFS as expected
+PASS Analyser correctly scaled FFT data of size 1024
+PASS Actual FFT peak in the expected position (64)
+PASS Peak value is near 0 dBFS as expected
+PASS Analyser correctly scaled FFT data of size 2048
+PASS All Analyser tests passed.
+PASS successfullyParsed is true
+
+TEST COMPLETE
+