[Isolates] CompilationCache was moved to Isolate.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 67706485481f5c10d5961dc36d7e89f6bd8e6372..f87feb52d387aefb7e58b4dcf996d5c0fdcc314f 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -30,6 +30,7 @@
 #include "v8.h"
 
 #include "bootstrapper.h"
+#include "compilation-cache.h"
 #include "debug.h"
 #include "heap-profiler.h"
 #include "isolate.h"
@@ -109,6 +110,7 @@ Isolate* Isolate::Create(Deserializer* des) {
 Isolate::Isolate()
     : state_(UNINITIALIZED),
       bootstrapper_(NULL),
+      compilation_cache_(new CompilationCache()),
       cpu_features_(NULL),
       break_access_(OS::CreateMutex()),
       stub_cache_(NULL),
@@ -152,6 +154,8 @@ Isolate::~Isolate() {
   stub_cache_ = NULL;
   delete cpu_features_;
   cpu_features_ = NULL;
+  delete compilation_cache_;
+  compilation_cache_ = NULL;
   delete bootstrapper_;
   bootstrapper_ = NULL;