Implement CSS: scroll-boundary-behavior

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

Index: third_party/WebKit/Source/core/frame/UseCounter.cpp
diff --git a/third_party/WebKit/Source/core/frame/UseCounter.cpp b/third_party/WebKit/Source/core/frame/UseCounter.cpp
index 9c7697cf8de2c99eb18ac9028cf657d53860953d..18bfead92e66db61ce348c0e789ec2200007ba56 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.cpp
+++ b/third_party/WebKit/Source/core/frame/UseCounter.cpp
@@ -46,7 +46,7 @@ int totalPagesMeasuredCSSSampleId() {
 }
 
 // Make sure update_use_counter_css.py was run which updates histograms.xml.
-constexpr int kMaximumCSSSampleId = 560;
+constexpr int kMaximumCSSSampleId = 563;
 
 }  // namespace
 
@@ -1084,6 +1084,12 @@ int UseCounter::MapCSSPropertyIdToCSSSampleIdForHistogram(
       return 559;
     case CSSPropertyPlaceSelf:
       return 560;
+    case CSSPropertyScrollBoundaryBehavior:
+      return 561;
+    case CSSPropertyScrollBoundaryBehaviorX:
+      return 562;
+    case CSSPropertyScrollBoundaryBehaviorY:

[bokan, 2017/05/19 19:35:57]

You'll need matching changes in histograms.xml

[sunyunjia, 2017/05/25 20:07:10]

Done.

+      return 563;
     // 1. Add new features above this line (don't change the assigned numbers of
     // the existing items).
     // 2. Update kMaximumCSSSampleId with the new maximum value.