[Isolates] Moving TranscendentalCache to Isolate.

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index eaa02b5ff0281b7f8f0b03dd306898bad0174ba8..c4e470118f526bff529e86e9bc95af4903b113a4 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -324,7 +324,7 @@ void Heap::ReportStatisticsAfterGC() {
 
 
 void Heap::GarbageCollectionPrologue() {
-  TranscendentalCache::Clear();
+  Isolate::Current()->transcendental_cache()->Clear();
   ClearJSFunctionResultCaches();
   gc_count_++;
   unflattened_strings_length_ = 0;
@@ -4720,7 +4720,7 @@ bool Heap::GarbageCollectionGreedyCheck() {
 #endif
 
 
-TranscendentalCache::TranscendentalCache(TranscendentalCache::Type t)
+TranscendentalCache::SubCache::SubCache(Type t)
   : type_(t),
     heap_(HEAP) {
   uint32_t in0 = 0xffffffffu;  // Bit-pattern for a NaN that isn't
@@ -4733,9 +4733,6 @@ TranscendentalCache::TranscendentalCache(TranscendentalCache::Type t)
 }
 
 
-TranscendentalCache* TranscendentalCache::caches_[kNumberOfCaches];
-
-
 void TranscendentalCache::Clear() {
   for (int i = 0; i < kNumberOfCaches; i++) {
     if (caches_[i] != NULL) {