[css-align] Implement place-content alignment shorthand

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 95de635c0081b1f9ec5c6ca89ca5ed9fa52cc07a..072982fbaa368f07d6fe7f1826c5f865d8720d6a 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 = 555;
+constexpr int kMaximumCSSSampleId = 556;
 
 }  // namespace
 
@@ -1079,6 +1079,8 @@ int UseCounter::mapCSSPropertyIdToCSSSampleIdForHistogram(
       return 554;
     case CSSPropertyMaxBlockSize:
       return 555;
+    case CSSPropertyPlaceContent:
+      return 556;
     // 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.