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

test/cctest/compiler/test-gap-resolver.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/compiler/gap-resolver.h"
 
 #include "src/base/utils/random-number-generator.h"
 #include "test/cctest/cctest.h"
 
-using namespace v8::internal;
-using namespace v8::internal::compiler;
+namespace v8 {
+namespace internal {
+namespace compiler {
 
 // The state of our move interpreter is the mapping of operands to values. Note
 // that the actual values don't really matter, all we care about is equality.
 class InterpreterState {
  public:
   void ExecuteInParallel(const ParallelMove* moves) {
     InterpreterState copy(*this);
     for (const auto m : *moves) {
       if (!m->IsRedundant()) write(m->destination(), copy.read(m->source()));
     }
@@ skipping 223 matching lines @@
       mi1.AssembleParallelMove(pm);
 
       MoveInterpreter mi2(pmc.main_zone());
       GapResolver resolver(&mi2);
       resolver.Resolve(pm);
 
       CHECK(mi1.state() == mi2.state());
     }
   }
 }
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8