Add a use counter for CSS Font Loading

Add a use counter for CSS Font Loading

BUG=380990
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=175627

[tkent, 2014-06-05 08:32:18]

lgtm

[Kunihiko Sakamoto, 2014-06-05 09:41:08]

The CQ bit was checked by ksakamoto@chromium.org

[commit-bot: I haz the power, 2014-06-05 09:41:53]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ksakamoto@chromium.org/315163002/1

[commit-bot: I haz the power, 2014-06-05 12:51:54]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-06-05 12:51:54]

Failed to apply patch for Source/core/frame/UseCounter.h:
While running patch -p1 --forward --force --no-backup-if-mismatch;
  patching file Source/core/frame/UseCounter.h
  Hunk #1 FAILED at 434.
  1 out of 1 hunk FAILED -- saving rejects to file
Source/core/frame/UseCounter.h.rej

Patch:       Source/core/frame/UseCounter.h
Index: Source/core/frame/UseCounter.h
diff --git a/Source/core/frame/UseCounter.h b/Source/core/frame/UseCounter.h
index
c887cb699e429adae53ce6d5d22e431a390dde57..b97b4d339a5c1901e9de67c4639ddb60b069230d
100644
--- a/Source/core/frame/UseCounter.h
+++ b/Source/core/frame/UseCounter.h
@@ -434,6 +434,7 @@ public:
         FocusInOutEvent = 433,
         MouseEventMovementX = 434,
         MouseEventMovementY = 435,
+        DocumentFonts = 436,
         // Add new features immediately above this line. Don't change assigned
         // numbers of any item, and don't reuse removed slots.
         // Also, run update_use_counter_feature_enum.py in
chromium/src/tools/metrics/histograms/

[Kunihiko Sakamoto, 2014-06-06 00:41:35]

The CQ bit was checked by ksakamoto@chromium.org

[commit-bot: I haz the power, 2014-06-06 00:42:50]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ksakamoto@chromium.org/315163002/20001

[commit-bot: I haz the power, 2014-06-06 01:59:45]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  mac_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/mac_blink_rel/builds/10503)
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/10893)

[commit-bot: I haz the power, 2014-06-06 03:20:31]

Change committed as 175627