Make base::MessageLoops have names at construction time

base/message_loop.cc

Index: base/message_loop.cc
diff --git a/base/message_loop.cc b/base/message_loop.cc
index e3f6ea3440251bfcb43901ed4a32826381aa5171..522c9243cf0a986548fd12a834442af453cabb7e 100644
--- a/base/message_loop.cc
+++ b/base/message_loop.cc
@@ -15,6 +15,7 @@
 #include "base/message_pump_default.h"
 #include "base/metrics/histogram.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
+#include "base/threading/platform_thread.h"
 #include "base/threading/thread_local.h"
 #include "base/time.h"
 #include "base/tracked_objects.h"
@@ -122,10 +123,11 @@ MessageLoop::DestructionObserver::~DestructionObserver() {
 
 //------------------------------------------------------------------------------
 
-MessageLoop::MessageLoop(Type type)
+MessageLoop::MessageLoop(const char* thread_name, Type type)
     : type_(type),
       nestable_tasks_allowed_(true),
       exception_restoration_(false),
+      thread_name_(thread_name),
       message_histogram_(NULL),
       state_(NULL),
       should_leak_tasks_(true),
@@ -166,6 +168,9 @@ MessageLoop::MessageLoop(Type type)
     DCHECK_EQ(TYPE_DEFAULT, type_);
     pump_ = new base::MessagePumpDefault();
   }
+  base::PlatformThread::SetName(thread_name_.c_str());
+  // Tell the name to race detector.
+  ANNOTATE_THREAD_NAME(thread_name_.c_str());
 }
 
 MessageLoop::~MessageLoop() {