Move browser_action_test_util.h into chrome/browser/ui/extensions.

This CL moves a header file into the same directory structure as its
actual implementations. This is a precursor to
https://chromium-review.googlesource.com/c/chromium/src/+/897383 which
breaks dependencies without this change.

Bug: 762401
Tbr: [email protected]
Change-Id: I944c96bfb4146ba77bf8d96f5fca614da68cb8c3
Reviewed-on: https://chromium-review.googlesource.com/906143
Commit-Queue: calamity <[email protected]>
Reviewed-by: Ben Wells <[email protected]>
Reviewed-by: Trent Apted <[email protected]>
Cr-Commit-Position: refs/heads/master@{#535651}
diff --git a/chrome/browser/extensions/process_manager_browsertest.cc b/chrome/browser/extensions/process_manager_browsertest.cc
index 437aed6..56b167c 100644
--- a/chrome/browser/extensions/process_manager_browsertest.cc
+++ b/chrome/browser/extensions/process_manager_browsertest.cc
@@ -15,11 +15,11 @@
 #include "base/test/histogram_tester.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/permissions/permission_request_manager.h"
 #include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/extensions/browser_action_test_util.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/pref_names.h"