Don't print the callstack in forked browser test processes.

chrome/test/base/in_process_browser_test.h

Index: chrome/test/base/in_process_browser_test.h
===================================================================
--- chrome/test/base/in_process_browser_test.h	(revision 150562)
+++ chrome/test/base/in_process_browser_test.h	(working copy)
@@ -173,14 +173,6 @@
     return host_resolver_.get();
   }
 
-#if defined(OS_POSIX)
-  // This is only needed by a test that raises SIGTERM to ensure that a specific
-  // codepath is taken.
-  void DisableSIGTERMHandling() {
-    handle_sigterm_ = false;
-  }
-#endif
-
 #if defined(OS_MACOSX)
   // Returns the autorelease pool in use inside RunTestOnMainThreadLoop().
   base::mac::ScopedNSAutoreleasePool* AutoreleasePool() const {
@@ -213,10 +205,6 @@
   // specified in the command line.
   ScopedTempDir temp_user_data_dir_;
 
-#if defined(OS_POSIX)
-  bool handle_sigterm_;
-#endif
-
 #if defined(OS_CHROMEOS)
   chromeos::ScopedStubCrosEnabler stub_cros_enabler_;
 #endif  // defined(OS_CHROMEOS)