Disentangle assembler from isolate.

src/heap/incremental-marking.cc

Index: src/heap/incremental-marking.cc
diff --git a/src/heap/incremental-marking.cc b/src/heap/incremental-marking.cc
index 40468c9f6bf8dc28ff7243566b22e8709ce63194..c15a3e29608f3c4d551e9c46a7a97ab3eafc883c 100644
--- a/src/heap/incremental-marking.cc
+++ b/src/heap/incremental-marking.cc
@@ -81,7 +81,7 @@ void IncrementalMarking::RecordWriteOfCodeEntryFromCode(JSFunction* host,
 void IncrementalMarking::RecordCodeTargetPatch(Code* host, Address pc,
                                                HeapObject* value) {
   if (IsMarking()) {
-    RelocInfo rinfo(heap_->isolate(), pc, RelocInfo::CODE_TARGET, 0, host);
+    RelocInfo rinfo(pc, RelocInfo::CODE_TARGET, 0, host);
     RecordWriteIntoCode(host, &rinfo, value);
   }
 }
@@ -92,7 +92,7 @@ void IncrementalMarking::RecordCodeTargetPatch(Address pc, HeapObject* value) {
     Code* host = heap_->isolate()
                      ->inner_pointer_to_code_cache()
                      ->GcSafeFindCodeForInnerPointer(pc);
-    RelocInfo rinfo(heap_->isolate(), pc, RelocInfo::CODE_TARGET, 0, host);
+    RelocInfo rinfo(pc, RelocInfo::CODE_TARGET, 0, host);
     RecordWriteIntoCode(host, &rinfo, value);
   }
 }