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-rw-r--r--chrome/browser/chrome_thread.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/chrome/browser/chrome_thread.h b/chrome/browser/chrome_thread.h
index 6570f92..1fd1901 100644
--- a/chrome/browser/chrome_thread.h
+++ b/chrome/browser/chrome_thread.h
@@ -38,6 +38,16 @@ class ChromeThread : public base::Thread {
// This is the thread that interacts with the database.
DB,
+ // This is the thread that interacts with the history database.
+ HISTORY,
+
+#if defined(OS_LINUX)
+ // This thread has a second connection to the X server and is used to
+ // process UI requests when routing the request to the UI thread would risk
+ // deadlock.
+ BACKGROUND_X11,
+#endif
+
// This identifier does not represent a thread. Instead it counts the
// number of well-known threads. Insert new well-known threads before this
// identifier.