Check for the existance of a profile manager. Might not exist during early shutdown.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index 2e4d34511357128c0ee4cbf9855772fe37ea4cc8..db2a310edb911c1bb83b3726b8e33351068daa43 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -268,6 +268,13 @@ bool BrowserProcessImpl::ShouldClearLocalState(FilePath* profile_path) {
   FilePath user_data_dir;
   Profile* profile;
 
+  // Check for the existance of a profile manager. When quitting early,
+  // e.g. because another chrome instance is running, or when invoked with
+  // options such as --uninstall or --try-chrome-again=0, the profile manager
+  // does not exist yet.
+  if (!profile_manager_.get())
+    return false;
+
   PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
   profile = profile_manager_->GetDefaultProfile(user_data_dir);
   *profile_path = profile->GetPath();