Move VariationsParamAssociator to base

base/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 513 matching lines @@
     "message_loop/message_pump_libevent.cc",
     "message_loop/message_pump_libevent.h",
     "message_loop/message_pump_mac.h",
     "message_loop/message_pump_mac.mm",
     "message_loop/message_pump_win.cc",
     "message_loop/message_pump_win.h",
     "metrics/bucket_ranges.cc",
     "metrics/bucket_ranges.h",
     "metrics/field_trial.cc",
     "metrics/field_trial.h",
+    "metrics/field_trial_param_associator.cc",
+    "metrics/field_trial_param_associator.h",
     "metrics/histogram.cc",
     "metrics/histogram.h",
     "metrics/histogram_base.cc",
     "metrics/histogram_base.h",
     "metrics/histogram_delta_serialization.cc",
     "metrics/histogram_delta_serialization.h",
     "metrics/histogram_flattener.h",
     "metrics/histogram_macros.h",
     "metrics/histogram_samples.cc",
     "metrics/histogram_samples.h",
@@ skipping 1901 matching lines @@
     testonly = true
     deps = [
       ":base_java",
     ]
     java_files = [
       "test/android/java/src/org/chromium/base/ContentUriTestUtils.java",
       "test/android/java/src/org/chromium/base/TestSystemMessageHandler.java",
     ]
   }
 }