Move variations component code to variations namespace.

chrome/browser/metrics/variations/variations_service.h

Index: chrome/browser/metrics/variations/variations_service.h
===================================================================
--- chrome/browser/metrics/variations/variations_service.h	(revision 285608)
+++ chrome/browser/metrics/variations/variations_service.h	(working copy)
@@ -41,10 +41,12 @@
 class PrefRegistrySyncable;
 }
 
+namespace variations {
+class VariationsSeed;
+}
+
 namespace chrome_variations {
 
-class VariationsSeed;
-
 // Used to setup field trials based on stored variations seed data, and fetch
 // new seed data from the variations server.
 class VariationsService
@@ -162,7 +164,8 @@
   void FetchVariationsSeed();
 
   // Notify any observers of this service based on the simulation |result|.
-  void NotifyObservers(const VariationsSeedSimulator::Result& result);
+  void NotifyObservers(
+      const variations::VariationsSeedSimulator::Result& result);
 
   // net::URLFetcherDelegate implementation:
   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
@@ -172,7 +175,7 @@
 
   // Performs a variations seed simulation with the given |seed| and |version|
   // and logs the simulation results as histograms.
-  void PerformSimulationWithVersion(scoped_ptr<VariationsSeed> seed,
+  void PerformSimulationWithVersion(scoped_ptr<variations::VariationsSeed> seed,
                                     const base::Version& version);
 
   // Record the time of the most recent successful fetch.