Replace tracked_objects::Location with base::Location.

Part 1/4 to replace these namespace qualifications.

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Bug: 763556
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I06ec01e1805744a7bba244b35ed09ace7af3152a
Reviewed-on: https://chromium-review.googlesource.com/662560
Commit-Queue: Brett Wilson <[email protected]>
Reviewed-by: Daniel Cheng <[email protected]>
Reviewed-by: Brett Wilson <[email protected]>
Cr-Commit-Position: refs/heads/master@{#501189}
diff --git a/chrome/browser/extensions/extension_service_sync_unittest.cc b/chrome/browser/extensions/extension_service_sync_unittest.cc
index cd1ac904..ba2d365 100644
--- a/chrome/browser/extensions/extension_service_sync_unittest.cc
+++ b/chrome/browser/extensions/extension_service_sync_unittest.cc
@@ -148,7 +148,7 @@
   // the FakeSyncChangeProcessor's SyncDataList as a map keyed by extension
   // id.
   syncer::SyncError ProcessSyncChanges(
-      const tracked_objects::Location& from_here,
+      const base::Location& from_here,
       const syncer::SyncChangeList& change_list) override {
     syncer::FakeSyncChangeProcessor::ProcessSyncChanges(from_here, change_list);
     for (const auto& change : change_list) {