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

chrome/test/base/in_process_browser_test.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/test/base/in_process_browser_test.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
-#include "base/debug/stack_trace.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/string_number_conversions.h"
 #include "base/test/test_file_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/captive_portal/captive_portal_service.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 32 matching lines @@
 
 namespace {
 
 // Passed as value of kTestType.
 const char kBrowserTestType[] = "browser";
 
 }  // namespace
 
 InProcessBrowserTest::InProcessBrowserTest()
     : browser_(NULL)
-#if defined(OS_POSIX)
-      , handle_sigterm_(true)
-#endif
 #if defined(OS_MACOSX)
       , autorelease_pool_(NULL)
 #endif  // OS_MACOSX
     {
 #if defined(OS_MACOSX)
   // TODO(phajdan.jr): Make browser_tests self-contained on Mac, remove this.
   // Before we run the browser, we have to hack the path to the exe to match
   // what it would be if Chrome was running, because it is used to fork renderer
   // processes, on Linux at least (failure to do so will cause a browser_test to
   // be run instead of a renderer).
@@ skipping 233 matching lines @@
   new_command_line.AppendSwitchPath(switches::kUserDataDir, user_data_dir);
 
   for (CommandLine::SwitchMap::const_iterator iter = switches.begin();
         iter != switches.end(); ++iter) {
     new_command_line.AppendSwitchNative((*iter).first, (*iter).second);
   }
   return new_command_line;
 }
 #endif
 
-#if defined(OS_POSIX)
-// On SIGTERM (sent by the runner on timeouts), dump a stack trace (to make
-// debugging easier) and also exit with a known error code (so that the test
-// framework considers this a failure -- http://crbug.com/57578).
-static void DumpStackTraceSignalHandler(int signal) {
-  base::debug::StackTrace().PrintBacktrace();
-  _exit(128 + signal);
-}
-#endif  // defined(OS_POSIX)
-
 void InProcessBrowserTest::RunTestOnMainThreadLoop() {
-#if defined(OS_POSIX)
-  if (handle_sigterm_)
-    signal(SIGTERM, DumpStackTraceSignalHandler);
-#endif  // defined(OS_POSIX)
-
   // Pump startup related events.
   content::RunAllPendingInMessageLoop();
 
 #if defined(OS_MACOSX)
   autorelease_pool_->Recycle();
 #endif
 
   if (!BrowserList::empty()) {
     browser_ = *BrowserList::begin();
     content::WaitForLoadStop(chrome::GetActiveWebContents(browser_));
@@ skipping 50 matching lines @@
   // On the Mac, this eventually reaches
   // -[BrowserWindowController windowWillClose:], which will post a deferred
   // -autorelease on itself to ultimately destroy the Browser object. The line
   // below is necessary to pump these pending messages to ensure all Browsers
   // get deleted.
   content::RunAllPendingInMessageLoop();
   delete autorelease_pool_;
   autorelease_pool_ = NULL;
 #endif
 }