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

test/cctest/compiler/test-changes-lowering.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 <limits>
 
 #include "src/compiler/change-lowering.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/pipeline.h"
 #include "src/compiler/select-lowering.h"
 #include "src/compiler/simplified-lowering.h"
 #include "src/compiler/typer.h"
 #include "src/compiler/verifier.h"
 #include "src/execution.h"
 #include "src/globals.h"
 #include "src/parser.h"
 #include "src/rewriter.h"
 #include "src/scopes.h"
 #include "test/cctest/cctest.h"
 #include "test/cctest/compiler/codegen-tester.h"
 #include "test/cctest/compiler/function-tester.h"
 #include "test/cctest/compiler/graph-builder-tester.h"
 #include "test/cctest/compiler/value-helper.h"
 
-using namespace v8::internal;
-using namespace v8::internal::compiler;
+namespace v8 {
+namespace internal {
+namespace compiler {
 
 template <typename ReturnType>
 class ChangesLoweringTester : public GraphBuilderTester<ReturnType> {
  public:
   explicit ChangesLoweringTester(MachineType p0 = kMachNone)
       : GraphBuilderTester<ReturnType>(p0),
         javascript(this->zone()),
         jsgraph(this->isolate(), this->graph(), this->common(), &javascript,
                 nullptr, this->machine()),
         function(Handle<JSFunction>::null()) {}
@@ skipping 237 matching lines @@
     Object* true_obj = t.heap()->true_value();
     CHECK_EQ(true_obj, result);
   }
 
   {
     Object* result = t.Call(0);
     Object* false_obj = t.heap()->false_value();
     CHECK_EQ(false_obj, result);
   }
 }
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8