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

test/cctest/compiler/test-run-variables.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 "test/cctest/compiler/function-tester.h"
 
-using namespace v8::internal;
-using namespace v8::internal::compiler;
+namespace v8 {
+namespace internal {
+namespace compiler {
 
 static const char* throws = NULL;
 
 static const char* load_tests[] = {
     "var x = a; r = x",                       "123",       "0",
     "var x = (r = x)",                        "undefined", "undefined",
     "var x = (a?1:2); r = x",                 "1",         "2",
     "const x = a; r = x",                     "123",       "0",
     "const x = (r = x)",                      "undefined", "undefined",
     "const x = (a?3:4); r = x",               "3",         "4",
@@ skipping 90 matching lines @@
 }
 
 
 TEST(SelfReferenceVariable) {
   FunctionTester T("(function self() { return self; })");
 
   T.CheckCall(T.function);
   CompileRun("var self = 'not a function'");
   T.CheckCall(T.function);
 }
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8