[osr] Increase Code::profiler_ticks to 28 bits.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 6b1cfb3c330f1d22c31793d0b4b807d2f0b537e4..95c64fcf6ffaafa6e56e60b813066cf231e93797 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -4602,14 +4602,16 @@ void Code::set_allow_osr_at_loop_nesting_level(int level) {
 
 int Code::profiler_ticks() {
   DCHECK_EQ(FUNCTION, kind());
-  return READ_BYTE_FIELD(this, kProfilerTicksOffset);
+  return ProfilerTicksField::decode(
+      READ_UINT32_FIELD(this, kKindSpecificFlags1Offset));
 }
 
 
 void Code::set_profiler_ticks(int ticks) {
-  DCHECK(ticks < 256);
   if (kind() == FUNCTION) {
-    WRITE_BYTE_FIELD(this, kProfilerTicksOffset, ticks);
+    unsigned previous = READ_UINT32_FIELD(this, kKindSpecificFlags1Offset);
+    unsigned updated = ProfilerTicksField::update(previous, ticks);
+    WRITE_UINT32_FIELD(this, kKindSpecificFlags1Offset, updated);
   }
 }