Increase kShutdownDetectorThreadStackSize to avoid tcmalloc stack overflow.

BUG=332297

Review URL: https://codereview.chromium.org/127743002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243702 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chrome_browser_main_posix.cc

@@ -314,7 +314,7 @@ void ChromeBrowserMainPartsPosix::PostMainMessageLoopStart() {
     g_shutdown_pipe_read_fd = pipefd[0];
     g_shutdown_pipe_write_fd = pipefd[1];
 #if !defined(ADDRESS_SANITIZER) && !defined(KEEP_SHADOW_STACKS)
-    const size_t kShutdownDetectorThreadStackSize = PTHREAD_STACK_MIN;
+    const size_t kShutdownDetectorThreadStackSize = PTHREAD_STACK_MIN * 2;
 #else
     // ASan instrumentation and -finstrument-functions (used for keeping the
     // shadow stacks) bloat the stack frames, so we need to increase the stack