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

test/cctest/compiler/test-osr.cc

 // Copyright 2015 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/codegen.h"
 #include "src/compiler/all-nodes.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/diamond.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/operator.h"
 #include "src/compiler/osr.h"
 #include "test/cctest/cctest.h"
 
-using namespace v8::internal;
-using namespace v8::internal::compiler;
+namespace v8 {
+namespace internal {
+namespace compiler {
 
 // TODO(titzer): move this method to a common testing place.
 
 static int CheckInputs(Node* node, Node* i0 = NULL, Node* i1 = NULL,
                        Node* i2 = NULL, Node* i3 = NULL) {
   int count = 4;
   if (i3 == NULL) count = 3;
   if (i2 == NULL) count = 2;
   if (i1 == NULL) count = 1;
   if (i0 == NULL) count = 0;
@@ skipping 528 matching lines @@
 
   Node* new_loop0_phi = new_ret->InputAt(0);
   CHECK_EQ(IrOpcode::kPhi, new_loop0_phi->opcode());
   CHECK_EQ(new_loop0_loop, NodeProperties::GetControlInput(new_loop0_phi));
   CHECK_EQ(new_loop0_phi, FindSuccessor(new_loop0_loop, IrOpcode::kPhi));
 
   // Check that the return returns the phi from the OSR loop and control
   // depends on the copy of the outer loop0.
   CheckInputs(new_ret, new_loop0_phi, T.graph.start(), new_loop0_exit);
 }
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8