Invalidate first line display item clients when first line style changes

third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
index 543857208a025c1c921b647e7c1722bc47083e21..5c2e2c3bf883d9b064a282e50e539d3be3928dd2 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp
@@ -3112,4 +3112,20 @@ void LayoutBlockFlow::positionDialog()
     dialog->setCentered(top);
 }
 
+static void invalidateDisplayItemClientsOfInlineBoxRecursively(InlineBox& box)

[mstensho (USE GERRIT), 2015/12/03 12:08:10]

All of this should go into LayoutBlockFlowLine.cpp, since we have that
implementation separation.

[Xianzhu, 2015/12/03 17:38:22]

Done.

+{
+    box.layoutObject().invalidateDisplayItemClient(box);
+    if (!box.isInlineFlowBox())
+        return;
+    for (InlineBox* child = toInlineFlowBox(box).firstChild(); child; child = child->nextOnLine())

[mstensho (USE GERRIT), 2015/12/03 12:08:10]

@eae: can you comment on this, please? I don't know the line code well enough.

+        invalidateDisplayItemClientsOfInlineBoxRecursively(*child);
+}
+
+void LayoutBlockFlow::invalidateDisplayItemClientsOfFirstLine()
+{
+    ASSERT(childrenInline());
+    if (RootInlineBox* firstRootBox = this->firstRootBox())
+        invalidateDisplayItemClientsOfInlineBoxRecursively(*firstRootBox);
+}
+
 } // namespace blink