Moved zones and zone related stuff in its own directory.

test/unittests/test-utils.h

Index: test/unittests/test-utils.h
diff --git a/test/unittests/test-utils.h b/test/unittests/test-utils.h
index c5788e2478a824d1c63f557a0a82d5949e51c619..984d63ce2a14870ce579a0825ed44ef1349c89e6 100644
--- a/test/unittests/test-utils.h
+++ b/test/unittests/test-utils.h
@@ -8,7 +8,8 @@
 #include "include/v8.h"
 #include "src/base/macros.h"
 #include "src/base/utils/random-number-generator.h"
-#include "src/zone.h"
+#include "src/zone/accounting-allocator.h"
+#include "src/zone/zone.h"
 #include "testing/gtest-support.h"
 
 namespace v8 {
@@ -103,7 +104,7 @@ class TestWithZone : public virtual ::testing::Test {
   Zone* zone() { return &zone_; }
 
  private:
-  base::AccountingAllocator allocator_;
+  v8::internal::AccountingAllocator allocator_;
   Zone zone_;
 
   DISALLOW_COPY_AND_ASSIGN(TestWithZone);
@@ -118,7 +119,7 @@ class TestWithIsolateAndZone : public virtual TestWithIsolate {
   Zone* zone() { return &zone_; }
 
  private:
-  base::AccountingAllocator allocator_;
+  v8::internal::AccountingAllocator allocator_;
   Zone zone_;
 
   DISALLOW_COPY_AND_ASSIGN(TestWithIsolateAndZone);