Replace "using namespace" statement with individual "using" statements

BUG=375497

Review URL: https://codereview.chromium.org/440703002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287460 0039d316-1c4b-4281-b951-d872f2087c98

components/nacl/loader/nonsfi/nonsfi_sandbox.cc

@@ -28,10 +28,19 @@
 #define MAP_STACK 0x20000
 #endif
 
-using namespace sandbox::bpf_dsl;
 using sandbox::CrashSIGSYS;
 using sandbox::CrashSIGSYSClone;
 using sandbox::CrashSIGSYSPrctl;
+using sandbox::bpf_dsl::Allow;
+using sandbox::bpf_dsl::Arg;
+using sandbox::bpf_dsl::Error;
+using sandbox::bpf_dsl::If;
+using sandbox::bpf_dsl::ResultExpr;
+
+// TODO(mdempsky): Make BoolExpr a standalone class so these operators can
+// be resolved via argument-dependent lookup.
+using sandbox::bpf_dsl::operator&&;
+using sandbox::bpf_dsl::operator||;
 
 namespace nacl {
 namespace nonsfi {

sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc

@@ -84,7 +84,7 @@ using sandbox::bpf_dsl::If;
 using sandbox::bpf_dsl::ResultExpr;
 
 // TODO(mdempsky): Make BoolExpr a standalone class so these operators can
-// be resolved via argument-dependant lookup.
+// be resolved via argument-dependent lookup.
 using sandbox::bpf_dsl::operator||;
 using sandbox::bpf_dsl::operator&&;