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

test/cctest/compiler/test-pipeline.cc

 // Copyright 2013 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.h"
 #include "src/compiler/pipeline.h"
 #include "src/handles.h"
 #include "src/parser.h"
 #include "test/cctest/cctest.h"
 
-using namespace v8::internal;
-using namespace v8::internal::compiler;
+namespace v8 {
+namespace internal {
+namespace compiler {
 
 static void RunPipeline(Zone* zone, const char* source) {
   Handle<JSFunction> function = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
       *v8::Local<v8::Function>::Cast(CompileRun(source))));
   ParseInfo parse_info(zone, function);
   CHECK(Compiler::ParseAndAnalyze(&parse_info));
   CompilationInfo info(&parse_info);
   info.SetOptimizing(BailoutId::None(), Handle<Code>(function->code()));
 
   Pipeline pipeline(&info);
   Handle<Code> code = pipeline.GenerateCode();
   CHECK(!code.is_null());
 }
 
 
 TEST(PipelineTyped) {
   HandleAndZoneScope handles;
   FLAG_turbo_types = true;
   RunPipeline(handles.main_zone(), "(function(a,b) { return a + b; })");
 }
 
 
 TEST(PipelineGeneric) {
   HandleAndZoneScope handles;
   FLAG_turbo_types = false;
   RunPipeline(handles.main_zone(), "(function(a,b) { return a + b; })");
 }
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8