Have ScriptPromiseResolver on the Oilpan heap always.

Source/modules/webaudio/RealtimeAnalyser.cpp

Index: Source/modules/webaudio/RealtimeAnalyser.cpp
diff --git a/Source/modules/webaudio/RealtimeAnalyser.cpp b/Source/modules/webaudio/RealtimeAnalyser.cpp
index a8a8e662af4d5724582fda9a90c0107c9dddd519..26b2f68dedaa3cf74cb9ea7e9ad78167bb2695a9 100644
--- a/Source/modules/webaudio/RealtimeAnalyser.cpp
+++ b/Source/modules/webaudio/RealtimeAnalyser.cpp
@@ -37,7 +37,7 @@
 
 namespace blink {
 
-const double RealtimeAnalyser::DefaultSmoothingTimeConstant  = 0.8;
+const double RealtimeAnalyser::DefaultSmoothingTimeConstant = 0.8;

[Raymond Toy, 2015/08/03 15:46:54]

Drive-by-comment:

This change seems unrelated.  Given the large size of the change, I think it
would be better not to do this here, even though it's trivial.

[sof, 2015/08/03 15:53:47]

A whitespace change too trivial to merit a change of its own, I reasoned, after
stumbling across another one of its kind in a modules/ file.

Could you explain your reasoning for why it would be risky to include it here?

 const double RealtimeAnalyser::DefaultMinDecibels = -100;
 const double RealtimeAnalyser::DefaultMaxDecibels = -30;