Rename chromium.fyi 'Chromium Win 10' to 'Win 10 Fast Ring'

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 b07a64e9b4ea3ec1ee7f09fc090356bcfd7ee66a..eb287be3f2ccd88da11b84bd9e6b00a89253cc41 100644
--- a/masters/master.chromium.fyi/master.cfg
+++ b/masters/master.chromium.fyi/master.cfg
@@ -137,7 +137,7 @@ s_chromium = Scheduler(
                   'CFI Linux CF',
                   'LTO Linux Perf',
                   'UBSanVptr Linux',
-                  'Chromium Win 10',
+                  'Win 10 Fast Ring',
                   'Libfuzzer Upload Linux ASan',
                   'Libfuzzer Upload Linux MSan',
                   'Libfuzzer Upload Linux UBSan',
@@ -1095,8 +1095,8 @@ b_chromium_ubsan_vptr_linux = {
   'auto_reboot': True,
 }
 
-b_chromium_win10 = {
-  'name': 'Chromium Win 10',
+b_win_10_fast_ring = {
+  'name': 'Win 10 Fast Ring',
   'factory': m_annotator.BaseFactory('chromium'),
   'category': 'win10',
   'auto_reboot': True,
@@ -1293,8 +1293,8 @@ c['builders'] = [
   # UBSan Vptr
   b_chromium_ubsan_vptr_linux,
 
-  # Windows 10.
-  b_chromium_win10,
+  # Windows 10 Fast Ring (early releases of Win 10).
+  b_win_10_fast_ring,
 
   # Material Design in the browser's top chrome.
   b_chromium_md_top_chrome_chromeos_non_material,