AllocationProfiler: introduce allocation_profiler flag in V8 api.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 71cd301581fae8c3679c546f3ff4a2834440b365..58de1ab91ea1e2102ea4c092f3e16b396f6a03cd 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -1790,7 +1790,8 @@ Isolate::Isolate()
       deferred_handles_head_(NULL),
       optimizing_compiler_thread_(NULL),
       sweeper_thread_(NULL),
-      stress_deopt_count_(0) {
+      stress_deopt_count_(0),
+      allocation_profiler_(false) {
   id_ = NoBarrier_AtomicIncrement(&isolate_counter_, 1);
   TRACE_ISOLATE(constructor);
 
@@ -2148,6 +2149,10 @@ bool Isolate::Init(Deserializer* des) {
     ASSERT(des == NULL);
   }
 
+  if (is_allocation_profiler_enabled()) {
+    ASSERT(des == NULL);
+  }
+
   // The initialization process does not handle memory exhaustion.
   DisallowAllocationFailure disallow_allocation_failure;