Make array allocation stub shared between isolates.

runtime/vm/stack_frame.h

Index: runtime/vm/stack_frame.h
diff --git a/runtime/vm/stack_frame.h b/runtime/vm/stack_frame.h
index dd849e57948a7288b9a001a0d19cfd757313c907..94ba9d31837e3fdcd98ae4b278df180be3530ec7 100644
--- a/runtime/vm/stack_frame.h
+++ b/runtime/vm/stack_frame.h
@@ -144,7 +144,7 @@ class ExitFrame : public StackFrame {
 class EntryFrame : public StackFrame {
  public:
   bool IsValid() const {
-    return StubCode::InInvocationStubForIsolate(isolate(), pc());
+    return StubCode::InInvocationStub(pc());
   }
   bool IsDartFrame(bool validate = true) const { return false; }
   bool IsStubFrame() const { return false; }
@@ -206,7 +206,7 @@ class StackFrameIterator : public ValueObject {
       }
       const uword pc = *(reinterpret_cast<uword*>(
           sp_ + (kSavedPcSlotFromSp * kWordSize)));
-      return !StubCode::InInvocationStubForIsolate(isolate_, pc);
+      return !StubCode::InInvocationStub(pc);
     }
 
     // Get next non entry/exit frame in the set (assumes a next frame exists).