Add Static Initializer for leak detector TLS

components/metrics/leak_detector/leak_detector.cc

Index: components/metrics/leak_detector/leak_detector.cc
diff --git a/components/metrics/leak_detector/leak_detector.cc b/components/metrics/leak_detector/leak_detector.cc
index b90d21833221c1627987e8aa6d19643cb15dde7a..54c8292436b23fbf108aab49f35f910750579622 100644
--- a/components/metrics/leak_detector/leak_detector.cc
+++ b/components/metrics/leak_detector/leak_detector.cc
@@ -17,6 +17,7 @@
 #include "base/threading/thread_local.h"
 #include "components/metrics/leak_detector/custom_allocator.h"
 #include "components/metrics/leak_detector/leak_detector_impl.h"
+#include "components/metrics/proto/memory_leak_report.pb.h"
 
 #if defined(OS_CHROMEOS)
 #include <link.h>  // for dl_iterate_phdr
@@ -159,6 +160,10 @@ inline void StoreHookDataToTLS(HookData hook_data) {
 LeakDetector* LeakDetector::GetInstance() {
   return g_instance.Pointer();
 }
+// static

[jochen (gone - plz use gerrit), 2016/06/01 15:11:28]

nit. empty line above this line

[Simon Que, 2016/06/02 17:55:17]

Done.

+void LeakDetector::StaticInit() {
+  g_hook_data_tls.Get();

[Primiano Tucci (use gerrit), 2016/06/01 21:26:30]

ignore_result(g_hook_data_tls.Pointer()); just to document a bit more the intent

[Simon Que, 2016/06/02 17:55:17]

Done.

+}
 
 void LeakDetector::Init(const MemoryLeakReportProto::Params& params,
                         scoped_refptr<base::TaskRunner> task_runner) {