mojo: Improve crash stack.

mojo/runner/desktop/main_helper.cc

Index: mojo/runner/desktop/main_helper.cc
diff --git a/mojo/runner/desktop/main_helper.cc b/mojo/runner/desktop/main_helper.cc
index 8f850f5e095211e3906379d92a890bf95fb02aa2..c36266631f3f77fed3c1e4b3258831e3cc4fd5e6 100644
--- a/mojo/runner/desktop/main_helper.cc
+++ b/mojo/runner/desktop/main_helper.cc
@@ -4,12 +4,10 @@
 
 #include "mojo/runner/desktop/main_helper.h"
 
-
 #include "base/at_exit.h"
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
-#include "base/debug/stack_trace.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/process/launch.h"
@@ -42,7 +40,6 @@ int RunnerMain(int argc, char** argv,
   WaitForDebuggerIfNecessary();
 
 #if !defined(OFFICIAL_BUILD)
-  base::debug::EnableInProcessStackDumping();

[sadrul, 2015/12/03 18:15:51]

Remove this caused no backtrace when mus crashes. That's a regression :( Can
this remain in place?

 #if defined(OS_WIN)
   base::RouteStdioToConsole(false);
 #endif