Change requiresLineBox to return false for empty-text inline.

third_party/WebKit/Source/core/layout/api/LineLayoutItem.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef LineLayoutItem_h
 #define LineLayoutItem_h
 
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutObjectInlines.h"
+#include "core/layout/LayoutText.h"
 
 #include "platform/LayoutUnit.h"
 #include "wtf/Allocator.h"
 #include "wtf/HashTableDeletedValueType.h"
 
 namespace blink {
 
 class ComputedStyle;
 class Document;
 class HitTestRequest;
@@ skipping 289 matching lines @@
     bool isTableCell() const
     {
         return m_layoutObject->isTableCell();
     }
 
     bool isText() const
     {
         return m_layoutObject->isText();
     }
 
+    bool isEmptyText() const
+    {
+        return isText() && toLayoutText(m_layoutObject)->text().isEmpty();
+    }
+
     bool hasLayer() const
     {
         return m_layoutObject->hasLayer();
     }
 
     bool selfNeedsLayout() const
     {
         return m_layoutObject->selfNeedsLayout();
     }
 
@@ skipping 171 matching lines @@
 
 template <>
 struct HashTraits<blink::LineLayoutItem> : SimpleClassHashTraits<blink::LineLayoutItem> {
     STATIC_ONLY(HashTraits);
 };
 
 } // namespace WTF
 
 
 #endif // LineLayoutItem_h