Add CFI Linux ToT builder.

masters/master.chromium.fyi/master.cfg

Index: masters/master.chromium.fyi/master.cfg
diff --git a/masters/master.chromium.fyi/master.cfg b/masters/master.chromium.fyi/master.cfg
index d7ee19e1db021f09985627740a65e5ef5401aff8..f17a1de2877beba90ee24975ac4b015926d129f9 100644
--- a/masters/master.chromium.fyi/master.cfg
+++ b/masters/master.chromium.fyi/master.cfg
@@ -145,6 +145,7 @@ s_chromium = Scheduler(
                   'Browser Side Navigation Linux',
                   'Closure Compilation Linux',
                   'CFI Linux',
+                  'CFI Linux ToT',
                   'CFI Linux CF',
                   'Chromium Win 10',
                   'Libfuzzer Upload Linux',
@@ -1600,6 +1601,14 @@ b_chromium_cfi_linux = {
   'auto_reboot': True,
 }
 
+b_chromium_cfi_linux_tot = {
+  'name': 'CFI Linux ToT',
+  'factory': m_annotator.BaseFactory('chromium',
+                                     timeout=12000),
+  'category': 'clang tot',
+  'auto_reboot': True,
+}
+
 b_chromium_cfi_linux_cf = {
   'name': 'CFI Linux CF',
   'factory': linux().ChromiumFactory(
@@ -1806,6 +1815,7 @@ c['builders'] = [
 
   # Control flow integrity.
   b_chromium_cfi_linux,
+  b_chromium_cfi_linux_tot,
   b_chromium_cfi_linux_cf,
 
   # Windows 10.