[build] Fix header-hygiene warnings for arm64

test/cctest/test-utils-arm64.h

Index: test/cctest/test-utils-arm64.h
diff --git a/test/cctest/test-utils-arm64.h b/test/cctest/test-utils-arm64.h
index 3ecae23d4b7630118cad31229f3a2fe37041b3e0..e34365d4c3066beb27d9cae46e9547395852070b 100644
--- a/test/cctest/test-utils-arm64.h
+++ b/test/cctest/test-utils-arm64.h
@@ -36,7 +36,8 @@
 #include "src/macro-assembler.h"
 
 
-using namespace v8::internal;

[Michael Achenbach, 2016/07/25 15:13:29]

https://www.chromium.org/developers/coding-style/chromium-style-checker-errors

Look for header-hygiene

+namespace v8 {
+namespace internal {
 
 
 // RegisterDump: Object allowing integer, floating point and flags registers
@@ -230,4 +231,7 @@ void ClobberFP(MacroAssembler* masm, RegList reg_list,
 // Clobber or ClobberFP functions.
 void Clobber(MacroAssembler* masm, CPURegList reg_list);
 
+}  // namespace internal
+}  // namespace v8
+
 #endif  // V8_ARM64_TEST_UTILS_ARM64_H_