remove Isolate::Current from most files starting with 'd' and 'e'

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index fc6a1ec40ff13a047aceb5d585f7b6a5c7f06217..faf812581cd4d83baa8137b83de57a10bbfb3fde 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -82,16 +82,18 @@ TEST(HeapMaps) {
 static void CheckOddball(Isolate* isolate, Object* obj, const char* string) {
   CHECK(obj->IsOddball());
   bool exc;
+  Handle<Object> handle(obj, isolate);
   Object* print_string =
-      *Execution::ToString(Handle<Object>(obj, isolate), &exc);
+      *Execution::ToString(isolate, handle, &exc);
   CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
 }
 
 
 static void CheckSmi(Isolate* isolate, int value, const char* string) {
   bool exc;
+  Handle<Object> handle(Smi::FromInt(value), isolate);
   Object* print_string =
-      *Execution::ToString(Handle<Object>(Smi::FromInt(value), isolate), &exc);
+      *Execution::ToString(isolate, handle, &exc);
   CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
 }
 
@@ -100,8 +102,9 @@ static void CheckNumber(Isolate* isolate, double value, const char* string) {
   Object* obj = HEAP->NumberFromDouble(value)->ToObjectChecked();
   CHECK(obj->IsNumber());
   bool exc;
+  Handle<Object> handle(obj, isolate);
   Object* print_string =
-      *Execution::ToString(Handle<Object>(obj, isolate), &exc);
+      *Execution::ToString(isolate, handle, &exc);
   CHECK(String::cast(print_string)->IsUtf8EqualTo(CStrVector(string)));
 }