Remove user gestures on touches other than tap in cross-origin iframes

third_party/WebKit/Source/core/frame/UseCounter.h

 /*
  * Copyright (C) 2012 Google, Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1080 matching lines @@
         ScriptPassesCSPDynamic = 1275,
         ScriptPassesCSPNonce = 1276,
         CSPWithUnsafeDynamic = 1277,
         ScrollAnchored = 1278,
         AddEventListenerFourArguments = 1279,
         RemoveEventListenerFourArguments = 1280,
         InvalidReportUriDirectiveInMetaCSP = 1281,
         InvalidSandboxDirectiveInMetaCSP = 1282,
         InvalidFrameAncestorsDirectiveInMetaCSP = 1283,
         TouchDragUserGestureUsed = 1284,
-        TouchDragUserGestureUsedCrossOrigin = 1285,
         DocumentCreateEventForeignFetchEvent = 1286,

[dtapuska, 2016/05/12 00:29:47]

Does it make sense to remove this since we aren't removing it in histograms.xml?

[Rick Byers, 2016/05/12 03:20:45]

I think so, but it looks we haven't been consistent on this point.  There's no
code that references it, so I don't think there's any value to keeping it in the
enum.  But we still need it in histograms.xml because that's used by the
dashboard to analyze all historical data.  This case was explicitly considered
by the script that updates histograms.xml:
https://code.google.com/p/chromium/codesearch#chromium/src/tools/metrics/hist...
"Existing items for which |source_enum_values| doesn't contain any corresponding
data will be preserved. "

         SVGCalcModeDiscrete = 1287,
         SVGCalcModeLinear = 1288,
         SVGCalcModePaced = 1289,
         SVGCalcModeSpline = 1290,
         FormSubmissionStarted = 1291,
         FormValidationStarted = 1292,
         FormValidationAbortedSubmission = 1293,
         FormValidationShowedMessage = 1294,
         WebAnimationsEasingAsFunctionLinear = 1295,
         WebAnimationsEasingAsFunctionOther = 1296,
@@ skipping 128 matching lines @@
     friend class UseCounterTest;
     static int m_muteCount;
 
     CountBits m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace blink
 
 #endif // UseCounter_h