[Sync] Rename csync namespace to syncer

sync/internal_api/public/util/immutable_unittest.cc

Index: sync/internal_api/public/util/immutable_unittest.cc
diff --git a/sync/internal_api/public/util/immutable_unittest.cc b/sync/internal_api/public/util/immutable_unittest.cc
index e124b709a609aebdea1e41b9fc1567a1855f5e4c..f8494b60971a060898ad25121539a7101468495c 100644
--- a/sync/internal_api/public/util/immutable_unittest.cc
+++ b/sync/internal_api/public/util/immutable_unittest.cc
@@ -16,7 +16,7 @@
 #include "base/memory/ref_counted.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-namespace csync {
+namespace syncer {
 
 // Helper class that keeps track of the token passed in at
 // construction and how many times that token is copied.
@@ -102,20 +102,20 @@ void swap(ADLToken& t1, ADLToken& t2) {
   t1.Swap(&t2);
 }
 
-}  // namespace csync
+}  // namespace syncer
 
 // Allowed by the standard (17.4.3.1/1).
 namespace std {
 
 template <>
-void swap(csync::SpecializationToken& t1,
-          csync::SpecializationToken& t2) {
+void swap(syncer::SpecializationToken& t1,
+          syncer::SpecializationToken& t2) {
   t1.Swap(&t2);
 }
 
 }  // namespace
 
-namespace csync {
+namespace syncer {
 namespace {
 
 class ImmutableTest : public ::testing::Test {};
@@ -247,4 +247,4 @@ TEST_F(ImmutableTest, Set) {
 }
 
 }  // namespace
-}  // namespace csync
+}  // namespace syncer