Fix ::first-letter not to apply non-block containers

third_party/WebKit/Source/core/style/ComputedStyle.h

Index: third_party/WebKit/Source/core/style/ComputedStyle.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.h b/third_party/WebKit/Source/core/style/ComputedStyle.h
index f8b0e9a0d2faec907584622e21be33ded96b1d73..395478dc55737d8c0f4707a660978886504b7240 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -3361,6 +3361,9 @@ class CORE_EXPORT ComputedStyle : public ComputedStyleBase,
   bool isOriginalDisplayInlineType() const {
     return isDisplayInlineType(originalDisplay());
   }
+  bool isDisplayBlockContainer() const {
+    return isDisplayBlockContainer(display());
+  }
   bool isDisplayFlexibleOrGridBox() const {
     return isDisplayFlexibleBox(display()) || isDisplayGridBox(display());
   }
@@ -3712,6 +3715,12 @@ class CORE_EXPORT ComputedStyle : public ComputedStyleBase,
                         setVisitedLinkCaretColor, v);
   }
 
+  static bool isDisplayBlockContainer(EDisplay display) {
+    return display == EDisplay::Block || display == EDisplay::ListItem ||
+           display == EDisplay::InlineBlock || display == EDisplay::FlowRoot ||
+           display == EDisplay::TableCell || display == EDisplay::TableCaption;
+  }
+
   static bool isDisplayFlexibleBox(EDisplay display) {
     return display == EDisplay::Flex || display == EDisplay::InlineFlex;
   }