Revert of Print stack traces in child processes when browser tests failed.

base/debug/stack_trace.h

Index: base/debug/stack_trace.h
diff --git a/base/debug/stack_trace.h b/base/debug/stack_trace.h
index b0fa3b063525c07b02fd79f7e44606c5695c9aff..fb271b6da4a41c70d40ad1851d3040dee6e6a7e3 100644
--- a/base/debug/stack_trace.h
+++ b/base/debug/stack_trace.h
@@ -54,8 +54,8 @@
   // Creates a stacktrace for an exception.
   // Note: this function will throw an import not found (StackWalk64) exception
   // on system without dbghelp 5.1.
-  StackTrace(_EXCEPTION_POINTERS* exception_pointers);
-  StackTrace(_CONTEXT* context);
+  StackTrace(const _EXCEPTION_POINTERS* exception_pointers);
+  StackTrace(const _CONTEXT* context);
 #endif
 
   // Copying and assignment are allowed with the default functions.