Fix leak in WeakPtrTest::NonOwnerThreadCanCopyAndAssignWeakPtr{,Base}

base/memory/weak_ptr_unittest.cc

Index: base/memory/weak_ptr_unittest.cc
diff --git a/base/memory/weak_ptr_unittest.cc b/base/memory/weak_ptr_unittest.cc
index 0a2724cb09ee9430b89b231a69372bd6e01e3a20..515df69e7b2f9caee89292abb5ce77a7a990fd18 100644
--- a/base/memory/weak_ptr_unittest.cc
+++ b/base/memory/weak_ptr_unittest.cc
@@ -436,32 +436,28 @@ TEST(WeakPtrTest, NonOwnerThreadCanCopyAndAssignWeakPtr) {
   // Main thread creates a Target object.
   Target target;
   // Main thread creates an arrow referencing the Target.
-  Arrow *arrow;
-  {
-    ANNOTATE_SCOPED_MEMORY_LEAK;
-    arrow = new Arrow();
-    arrow->target = target.AsWeakPtr();
-  }
+  Arrow *arrow = new Arrow();
+  arrow->target = target.AsWeakPtr();
+
   // Background can copy and assign arrow (as well as the WeakPtr inside).
   BackgroundThread background;
   background.Start();
   background.CopyAndAssignArrow(arrow);
+  background.DeleteArrow(arrow);
 }
 
 TEST(WeakPtrTest, NonOwnerThreadCanCopyAndAssignWeakPtrBase) {
   // Main thread creates a Target object.
   Target target;
   // Main thread creates an arrow referencing the Target.
-  Arrow *arrow;
-  {
-    ANNOTATE_SCOPED_MEMORY_LEAK;
-    arrow = new Arrow();
-    arrow->target = target.AsWeakPtr();
-  }
+  Arrow *arrow = new Arrow();
+  arrow->target = target.AsWeakPtr();
+
   // Background can copy and assign arrow's WeakPtr to a base class WeakPtr.
   BackgroundThread background;
   background.Start();
   background.CopyAndAssignArrowBase(arrow);
+  background.DeleteArrow(arrow);
 }
 
 TEST(WeakPtrTest, NonOwnerThreadCanDeleteWeakPtr) {