Move Location to base namespace in base.

This removes the obsolete tracked_objects:: qualification on
uses of Location in //base.

[email protected]

Bug: 763556
Change-Id: Iffdbf067f65f6dbfe309413294b8ace2e8917617
Reviewed-on: https://chromium-review.googlesource.com/662597
Reviewed-by: Brett Wilson <[email protected]>
Reviewed-by: Daniel Cheng <[email protected]>
Commit-Queue: Brett Wilson <[email protected]>
Cr-Commit-Position: refs/heads/master@{#501192}
diff --git a/base/run_loop_unittest.cc b/base/run_loop_unittest.cc
index 4f14b910..176c29f 100644
--- a/base/run_loop_unittest.cc
+++ b/base/run_loop_unittest.cc
@@ -67,7 +67,7 @@
  public:
   SimpleSingleThreadTaskRunner() = default;
 
-  bool PostDelayedTask(const tracked_objects::Location& from_here,
+  bool PostDelayedTask(const Location& from_here,
                        OnceClosure task,
                        base::TimeDelta delay) override {
     if (delay > base::TimeDelta())
@@ -77,7 +77,7 @@
     return true;
   }
 
-  bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
+  bool PostNonNestableDelayedTask(const Location& from_here,
                                   OnceClosure task,
                                   base::TimeDelta delay) override {
     return PostDelayedTask(from_here, std::move(task), delay);