Move variations component code to variations namespace.

components/variations/variations_associated_data.cc

Index: components/variations/variations_associated_data.cc
===================================================================
--- components/variations/variations_associated_data.cc	(revision 285608)
+++ components/variations/variations_associated_data.cc	(working copy)
@@ -10,13 +10,8 @@
 
 #include "base/memory/singleton.h"
 
-namespace chrome_variations {
+namespace variations {
 
-// TODO(asvitkine): Delete these when this file moves to variations namespace.
-using variations::ActiveGroupId;
-using variations::ActiveGroupIdCompare;
-using variations::MakeActiveGroupId;
-
 namespace {
 
 // The internal singleton accessor for the map, used to keep it thread-safe.
@@ -239,4 +234,4 @@
 
 }  // namespace testing
 
-}  // namespace chrome_variations
+}  // namespace variations