Account for border/padding in NG Inline layout algorithm.

third_party/WebKit/Source/core/layout/ng/geometry/ng_logical_rect.h

 // Copyright 2016 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 NGLogicalRect_h
 #define NGLogicalRect_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/geometry/ng_logical_offset.h"
 #include "core/layout/ng/geometry/ng_logical_size.h"
@@ skipping 20 matching lines @@
 
   LayoutUnit InlineStartOffset() const { return offset.inline_offset; }
   LayoutUnit InlineEndOffset() const {
     return offset.inline_offset + size.inline_size;
   }
   LayoutUnit BlockStartOffset() const { return offset.block_offset; }
   LayoutUnit BlockEndOffset() const {
     return offset.block_offset + size.block_size;
   }
 
+  NGLogicalOffset InlineStartBlockStartOffset() const {
+    return {InlineStartOffset(), BlockStartOffset()};
+  }
+
   NGLogicalOffset InlineEndBlockStartOffset() const {
     return {InlineEndOffset(), BlockStartOffset()};
   }
 
   LayoutUnit BlockSize() const { return size.block_size; }
   LayoutUnit InlineSize() const { return size.inline_size; }
 
   String ToString() const;
   bool operator==(const NGLogicalRect& other) const;
 
   NGLogicalOffset offset;
   NGLogicalSize size;
 };
 
 CORE_EXPORT std::ostream& operator<<(std::ostream&, const NGLogicalRect&);
 
 }  // namespace blink
 
 #endif  // NGLogicalRect_h