Remove all writing mode function arguments and remove writing mode from RenderStyle.

sky/engine/platform/text/WritingMode.h

 /*
  * Copyright (c) 2012, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 21 matching lines @@
 #define WritingMode_h
 
 namespace blink {
 
 // FIXME(sky): Remove
 enum WritingMode {
     TopToBottomWritingMode
 };
 
 // Lines have horizontal orientation; modes horizontal-tb or horizontal-bt.
-inline bool isHorizontalWritingMode(WritingMode writingMode)
+inline bool isHorizontalWritingMode()
 {
     // FIXME(sky): Remove
     return true;
 }
 
 // Bottom of the line occurs earlier in the block; modes vertical-lr or horizontal-bt.
-inline bool isFlippedLinesWritingMode(WritingMode writingMode)
+inline bool isFlippedLinesWritingMode()
 {
     // FIXME(sky): Remove
     return false;
 }
 
 // Block progression increases in the opposite direction to normal; modes vertical-rl or horizontal-bt.
-inline bool isFlippedBlocksWritingMode(WritingMode writingMode)
+inline bool isFlippedBlocksWritingMode()
 {
     // FIXME(sky): Remove
     return false;
 }
 
 } // namespace blink
 
 #endif // WritingMode_h