Remove many calls to Isolate::Current() in the dart embedding api by

runtime/vm/dart_api_impl.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_DART_API_IMPL_H_
 #define VM_DART_API_IMPL_H_
 
 #include "vm/allocation.h"
 #include "vm/object.h"
 
@@ skipping 55 matching lines @@
 
 const char* CheckIsolateState(Isolate *isolate,
                               bool generating_snapshot = false);
 
 void SetupErrorResult(Dart_Handle* handle);
 
 
 class Api : AllStatic {
  public:
   // Creates a new local handle.
-  static Dart_Handle NewLocalHandle(const Object& object);
+  static Dart_Handle NewLocalHandle(Isolate* isolate, const Object& object);
 
   // Unwraps the raw object from the handle.
   static RawObject* UnwrapHandle(Dart_Handle object);
 
   // Unwraps a raw Type from the handle.  The handle will be null if
   // the object was not of the requested Type.
 #define DECLARE_UNWRAP(Type)                                                  \
-  static const Type& Unwrap##Type##Handle(Dart_Handle object);
+  static const Type& Unwrap##Type##Handle(Isolate* isolate,                   \
+                                          Dart_Handle object);
   CLASS_LIST_NO_OBJECT(DECLARE_UNWRAP)
 #undef DECLARE_UNWRAP
 
   // Validates and converts the passed in handle as a local handle.
   static LocalHandle* UnwrapAsLocalHandle(const ApiState& state,
                                           Dart_Handle object);
 
   // Validates and converts the passed in handle as a persistent handle.
   static PersistentHandle* UnwrapAsPersistentHandle(const ApiState& state,
                                                     Dart_Handle object);
 
   // Validates and converts the passed in handle as a weak persistent handle.
   static FinalizablePersistentHandle* UnwrapAsWeakPersistentHandle(
       const ApiState& state,
       Dart_Handle object);
 
   // Validates and converts the passed in handle as a prologue weak
   // persistent handle.
   static FinalizablePersistentHandle* UnwrapAsPrologueWeakPersistentHandle(
       const ApiState& state,
       Dart_Handle object);
 
   // Casts the internal Isolate* type to the external Dart_Isolate type.
   static Dart_Isolate CastIsolate(Isolate* isolate);
 
   // Gets the handle used to designate successful return.
-  static Dart_Handle Success();
+  static Dart_Handle Success(Isolate* isolate);
 
   // Generates a handle used to designate an error return.
   static Dart_Handle NewError(const char* format, ...);
 
   // Gets a handle to Null.
-  static Dart_Handle Null();
+  static Dart_Handle Null(Isolate* isolate);
 
   // Gets a handle to True.
-  static Dart_Handle True();
+  static Dart_Handle True(Isolate* isolate);
 
   // Gets a handle to False
-  static Dart_Handle False();
+  static Dart_Handle False(Isolate* isolate);
 
   // Allocates space in the local zone.
-  static uword Allocate(intptr_t size);
+  static uword Allocate(Isolate* isolate, intptr_t size);
 
   // Reallocates space in the local zone.
-  static uword Reallocate(uword ptr, intptr_t old_size, intptr_t new_size);
+  static uword Reallocate(Isolate* isolate,
+                          uword ptr,
+                          intptr_t old_size,
+                          intptr_t new_size);
 
   // Performs one-time initialization needed by the API.
   static void InitOnce();
 
  private:
   // Thread local key used by the API. Currently holds the current
   // ApiNativeScope if any.
   static ThreadLocalKey api_native_key_;
 
   friend class ApiNativeScope;
 };
 
 class IsolateSaver {
  public:
   explicit IsolateSaver(Isolate* current_isolate)
       : saved_isolate_(current_isolate) {
   }
   ~IsolateSaver() {
     Isolate::SetCurrent(saved_isolate_);
   }
  private:
   Isolate* saved_isolate_;
 
   DISALLOW_COPY_AND_ASSIGN(IsolateSaver);
 };
 
 }  // namespace dart.
 
 #endif  // VM_DART_API_IMPL_H_