First past at removing writing mode.

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 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WritingMode_h
 #define WritingMode_h
 
 namespace blink {
 
+// FIXME(sky): Remove
 enum WritingMode {
-    TopToBottomWritingMode, RightToLeftWritingMode, LeftToRightWritingMode, BottomToTopWritingMode
+    TopToBottomWritingMode
 };
 
 // Lines have horizontal orientation; modes horizontal-tb or horizontal-bt.
 inline bool isHorizontalWritingMode(WritingMode writingMode)
 {
-    return writingMode == TopToBottomWritingMode || writingMode == BottomToTopWritingMode;
+    // 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)
 {
-    return writingMode == LeftToRightWritingMode || writingMode == BottomToTopWritingMode;
+    // 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)
 {
-    return writingMode == RightToLeftWritingMode || writingMode == BottomToTopWritingMode;
+    // FIXME(sky): Remove
+    return false;
 }
 
 } // namespace blink
 
 #endif // WritingMode_h