Revert 222826 "Copy the thread name to the stack for debugging p..."

trunk/src/base/threading/thread.cc

Index: trunk/src/base/threading/thread.cc
===================================================================
--- trunk/src/base/threading/thread.cc	(revision 225227)
+++ trunk/src/base/threading/thread.cc	(working copy)
@@ -5,7 +5,6 @@
 #include "base/threading/thread.h"
 
 #include "base/bind.h"
-#include "base/debug/alias.h"
 #include "base/lazy_instance.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "base/threading/thread_id_name_manager.h"
@@ -173,19 +172,6 @@
 
 void Thread::ThreadMain() {
   {
-#if defined(OS_MACOSX)
-    // Store the thread name on the stack to debug <http://crbug.com/274705>.
-    // End with a byte sequence of <EOT><BEL><NUL> to make it easier to grep in
-    // the minidump stack dump.
-    const size_t kThreadNameSize = 50;
-    char thread_name[kThreadNameSize];
-    strncpy(thread_name, name_.c_str(), kThreadNameSize);
-    thread_name[kThreadNameSize - 1] = '\0';
-    thread_name[kThreadNameSize - 2] = '\7';
-    thread_name[kThreadNameSize - 3] = '\3';
-    base::debug::Alias(thread_name);
-#endif
-
     // The message loop for this thread.
     // Allocated on the heap to centralize any leak reports at this line.
     scoped_ptr<MessageLoop> message_loop(
@@ -231,10 +217,6 @@
 
     // We can't receive messages anymore.
     message_loop_ = NULL;
-
-#if defined(OS_MACOSX)
-    base::debug::Alias(thread_name);
-#endif
   }
 }