Remove isolate pointer from context objects.

runtime/vm/object_test.cc

 // Copyright (c) 2012, 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.
 
 #include "platform/globals.h"
 
 #include "vm/assembler.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
@@ skipping 2382 matching lines @@
   EXPECT_EQ(-1, last_idx);
   script.TokenRangeAtLine(1000, &first_idx, &last_idx);
   EXPECT_EQ(-1, first_idx);
   EXPECT_EQ(-1, last_idx);
 }
 
 
 TEST_CASE(Context) {
   const int kNumVariables = 5;
   const Context& parent_context = Context::Handle(Context::New(0));
-  EXPECT_EQ(parent_context.isolate(), Isolate::Current());
   const Context& context = Context::Handle(Context::New(kNumVariables));
   context.set_parent(parent_context);
-  const Context& check_parent_context = Context::Handle(context.parent());
-  EXPECT_EQ(context.isolate(), check_parent_context.isolate());
   EXPECT_EQ(kNumVariables, context.num_variables());
   EXPECT(Context::Handle(context.parent()).raw() == parent_context.raw());
   EXPECT_EQ(0, Context::Handle(context.parent()).num_variables());
   EXPECT(Context::Handle(Context::Handle(context.parent()).parent()).IsNull());
   Object& variable = Object::Handle(context.At(0));
   EXPECT(variable.IsNull());
   variable = context.At(kNumVariables - 1);
   EXPECT(variable.IsNull());
   context.SetAt(0, Smi::Handle(Smi::New(2)));
   context.SetAt(2, Smi::Handle(Smi::New(3)));
@@ skipping 2053 matching lines @@
   EXPECT_VALID(h_result);
   Integer& result = Integer::Handle();
   result ^= Api::UnwrapHandle(h_result);
   String& foo = String::Handle(String::New("foo"));
   Integer& expected = Integer::Handle();
   expected ^= foo.HashCode();
   EXPECT(result.IsIdenticalTo(expected));
 }
 
 }  // namespace dart