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

> Copy the thread name to the stack for debugging purposes.
> 
> The this ptr in Thread is getting smashed after the MessageLoop ends, which
> leaves very little to go on. This is kind of a stab in the dark, but hopefully
> it makes something bleed in a general direction.
> 
> BUG=274705
> TEST=Minidumps contain 47 bytes of thread name data way high on the stack.
> R=mark@chromium.org
> 
> Review URL: https://codereview.chromium.org/23606030

TBR=rsesek@chromium.org

Review URL: https://codereview.chromium.org/24508003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225228 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 18 deletions

diff --git a/base/threading/thread.cc b/base/threading/thread.cc
index f033775..aca4ddb 100644
--- a/base/threading/thread.cc
+++ b/base/threading/thread.cc
@@ -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 @@ bool Thread::GetThreadWasQuitProperly() {
 
 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 @@ void Thread::ThreadMain() {
 
     // We can't receive messages anymore.
     message_loop_ = NULL;
-
-#if defined(OS_MACOSX)
-    base::debug::Alias(thread_name);
-#endif
   }
 }