remove most Isolate::Current asserts

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index fc5ed247ee5a86f38aa6a59794ace121fe538da4..ad0512f055b4b78a4d083d1151a0abef35eb842d 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1185,7 +1185,6 @@ Heap* HeapObject::GetHeap() {
   Heap* heap =
       MemoryChunk::FromAddress(reinterpret_cast<Address>(this))->heap();
   ASSERT(heap != NULL);
-  ASSERT(heap->isolate() == Isolate::Current());
   return heap;
 }
 
@@ -6177,7 +6176,6 @@ SMI_ACCESSORS(AliasedArgumentsEntry, aliased_context_slot, kAliasedContextSlot)
 
 
 Relocatable::Relocatable(Isolate* isolate) {
-  ASSERT(isolate == Isolate::Current());
   isolate_ = isolate;
   prev_ = isolate->relocatable_top();
   isolate->set_relocatable_top(this);
@@ -6185,7 +6183,6 @@ Relocatable::Relocatable(Isolate* isolate) {
 
 
 Relocatable::~Relocatable() {
-  ASSERT(isolate_ == Isolate::Current());
   ASSERT_EQ(isolate_->relocatable_top(), this);
   isolate_->set_relocatable_top(prev_);
 }