[Variations] Bring variations_http_header_provider to variations component

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index f8f8b998e2176b5015e844f716d89357aa5a54bd..4e57c7b4d88a4d7386aaf5de741bd85665dd1a16 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -61,7 +61,6 @@
 #include "chrome/browser/metrics/field_trial_synchronizer.h"
 #include "chrome/browser/metrics/thread_watcher.h"
 #include "chrome/browser/metrics/tracking_synchronizer.h"
-#include "chrome/browser/metrics/variations/variations_http_header_provider.h"
 #include "chrome/browser/metrics/variations/variations_service.h"
 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
 #include "chrome/browser/net/chrome_net_log.h"
@@ -112,6 +111,7 @@
 #include "components/signin/core/common/profile_management_switches.h"
 #include "components/startup_metric_utils/startup_metric_utils.h"
 #include "components/translate/core/browser/translate_download_manager.h"
+#include "components/variations/variations_http_header_provider.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
@@ -588,8 +588,8 @@ void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
   if (command_line->HasSwitch(switches::kForceVariationIds)) {
     // Create default variation ids which will always be included in the
     // X-Client-Data request header.
-    chrome_variations::VariationsHttpHeaderProvider* provider =
-        chrome_variations::VariationsHttpHeaderProvider::GetInstance();
+    variations::VariationsHttpHeaderProvider* provider =
+        variations::VariationsHttpHeaderProvider::GetInstance();
     bool result = provider->SetDefaultVariationIds(
         command_line->GetSwitchValueASCII(switches::kForceVariationIds));
     CHECK(result) << "Invalid --" << switches::kForceVariationIds