A64: Synchronize with r16993.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 94fa7c528917e74a327eed0f6f0e376568b56377..b3d8859473915967fd3396ebe6d945aa67428e66 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -1104,7 +1104,7 @@ class Isolate {
 #endif  // DEBUG
 
   OptimizingCompilerThread* optimizing_compiler_thread() {
-    return &optimizing_compiler_thread_;
+    return optimizing_compiler_thread_;
   }
 
   // PreInits and returns a default isolate. Needed when a new thread tries
@@ -1137,13 +1137,6 @@ class Isolate {
   // Given an address occupied by a live code object, return that object.
   Object* FindCodeObject(Address a);
 
-  bool is_memory_constrained() const {
-    return is_memory_constrained_;
-  }
-  void set_is_memory_constrained(bool value) {
-    is_memory_constrained_ = value;
-  }
-
  private:
   Isolate();
 
@@ -1316,7 +1309,6 @@ class Isolate {
   unibrow::Mapping<unibrow::Ecma262Canonicalize> interp_canonicalize_mapping_;
   CodeStubInterfaceDescriptor* code_stub_interface_descriptors_;
   RandomNumberGenerator* random_number_generator_;
-  bool is_memory_constrained_;
 
   // True if fatal error has been signaled for this isolate.
   bool has_fatal_error_;
@@ -1375,7 +1367,7 @@ class Isolate {
 #endif
 
   DeferredHandles* deferred_handles_head_;
-  OptimizingCompilerThread optimizing_compiler_thread_;
+  OptimizingCompilerThread* optimizing_compiler_thread_;
   MarkingThread** marking_thread_;
   SweeperThread** sweeper_thread_;