Move compiler cctests into v8::internal::compiler namespace.

test/cctest/compiler/test-js-constant-cache.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // TODO(jochen): Remove this after the setting is turned on globally.
 #define V8_IMMINENT_DEPRECATION_WARNINGS
 
 #include "src/assembler.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/typer.h"
 #include "src/types.h"
 #include "test/cctest/cctest.h"
 #include "test/cctest/compiler/value-helper.h"
 
-using namespace v8::internal;
-using namespace v8::internal::compiler;
+namespace v8 {
+namespace internal {
+namespace compiler {
 
 class JSCacheTesterHelper {
  protected:
   JSCacheTesterHelper(Isolate* isolate, Zone* zone)
       : main_graph_(zone),
         main_common_(zone),
         main_javascript_(zone),
         main_typer_(isolate, &main_graph_),
         main_machine_(zone) {}
   Graph main_graph_;
@@ skipping 439 matching lines @@
       T.Constant(1.11),
       T.ExternalConstant(ExternalReference::address_of_one_half())};
 
   NodeVector nodes(T.main_zone());
   T.GetCachedNodes(&nodes);
 
   for (size_t i = 0; i < arraysize(constants); i++) {
     CHECK(Contains(&nodes, constants[i]));
   }
 }
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8