Parsing CSS properties for scroll snap points

Source/core/frame/UseCounter.cpp

 /*
  * 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 514 matching lines @@
     case CSSPropertyAliasWebkitFlexFlow: return 489;
     case CSSPropertyAliasWebkitFlexGrow: return 490;
     case CSSPropertyAliasWebkitFlexShrink: return 491;
     case CSSPropertyAliasWebkitFlexWrap: return 492;
     case CSSPropertyAliasWebkitJustifyContent: return 493;
     case CSSPropertyAliasWebkitOpacity: return 494;
     case CSSPropertyAliasWebkitOrder: return 495;
     case CSSPropertyAliasWebkitShapeImageThreshold: return 496;
     case CSSPropertyAliasWebkitShapeMargin: return 497;
     case CSSPropertyAliasWebkitShapeOutside: return 498;
+    case CSSPropertyScrollSnapType: return 499;
+    case CSSPropertyScrollSnapPointsX: return 500;
+    case CSSPropertyScrollSnapPointsY: return 501;
+    case CSSPropertyScrollSnapCoordinate: return 502;
+    case CSSPropertyScrollSnapDestination: return 503;
 
     // 1. Add new features above this line (don't change the assigned numbers of the existing
     // items).
     // 2. Update maximumCSSSampleId() with the new maximum value.
     // 3. Run the update_use_counter_css.py script in
     // chromium/src/tools/metrics/histograms to update the UMA histogram names.

[majidvp, 2015/05/26 19:25:07]

Running the script resulted in a histogram.xml which in addition to the newly
added properties also replaced multiple 'webkit-*' properties with
'alias-webkit-*' ones (e.g.,'webkit-box-shadow' -> 'alias-webkit-box-shadow').

I felt this is not correct so I have not added the histogram.xml to the patch
yet.

[Timothy Loh, 2015/05/27 00:54:04]

I think histograms.xml is in a separate repo (not Blink) anyway. No need to do
this right now, should be fine if it's done at any later point.

 
     case CSSPropertyInvalid:
         ASSERT_NOT_REACHED();
         return 0;
     }
 
     ASSERT_NOT_REACHED();
     return 0;
 }
 
-static int maximumCSSSampleId() { return 498; }
+static int maximumCSSSampleId() { return 503; }
 
 void UseCounter::muteForInspector()
 {
     UseCounter::m_muteCount++;
 }
 
 void UseCounter::unmuteForInspector()
 {
     UseCounter::m_muteCount--;
 }
@@ skipping 378 matching lines @@
 UseCounter* UseCounter::getFrom(const StyleSheetContents* sheetContents)
 {
     // FIXME: We may want to handle stylesheets that have multiple owners
     //        http://crbug.com/242125
     if (sheetContents && sheetContents->hasSingleOwnerNode())
         return getFrom(sheetContents->singleOwnerDocument());
     return 0;
 }
 
 } // namespace blink