chrome/browser/metrics: Change auto to not deduce raw pointers.

chrome/browser/metrics/leak_detector/leak_detector_controller_unittest.cc

Index: chrome/browser/metrics/leak_detector/leak_detector_controller_unittest.cc
diff --git a/chrome/browser/metrics/leak_detector/leak_detector_controller_unittest.cc b/chrome/browser/metrics/leak_detector/leak_detector_controller_unittest.cc
index 118b3f8aff83e333a868f12ba6ad1e2c25676ef9..cee55ccb4d6770e34fcc3576d2c214c206825f3f 100644
--- a/chrome/browser/metrics/leak_detector/leak_detector_controller_unittest.cc
+++ b/chrome/browser/metrics/leak_detector/leak_detector_controller_unittest.cc
@@ -83,7 +83,7 @@ TEST(LeakDetectorControllerTest, SingleReport) {
 TEST(LeakDetectorControllerTest, SingleReportHistory) {
   MemoryLeakReportProto report;
 
-  auto entry = report.add_alloc_breakdown_history();
+  auto* entry = report.add_alloc_breakdown_history();
   InitializeRepeatedField({100, 200, 300}, entry->mutable_counts_by_size());
   entry->set_count_for_call_stack(15);