[Cleanup] Update histogram_tester.h includes in //components

Update all histogram_tester.h includes in //components to include
//base/test/metrics/histogram_tester.h

[email protected]

Bug: 846421
Change-Id: Ifd2e5aca73d956dfe931e48ef55f3572244a3463
Reviewed-on: https://chromium-review.googlesource.com/1082656
Reviewed-by: Devlin <[email protected]>
Commit-Queue: Devlin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#563700}
diff --git a/components/component_updater/component_updater_service_unittest.cc b/components/component_updater/component_updater_service_unittest.cc
index 864d27f..c7509e8 100644
--- a/components/component_updater/component_updater_service_unittest.cc
+++ b/components/component_updater/component_updater_service_unittest.cc
@@ -17,7 +17,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/task_scheduler/post_task.h"
-#include "base/test/histogram_tester.h"
+#include "base/test/metrics/histogram_tester.h"
 #include "base/test/scoped_task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/values.h"