Remove unreachable code from TransformState::move().

third_party/WebKit/Source/platform/geometry/TransformState.cpp

 /*
  * Copyright (C) 2011 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 57 matching lines @@
 
 void TransformState::move(const LayoutSize& offset, TransformAccumulation accumulate)
 {
     if (accumulate == FlattenTransform || !m_accumulatedTransform) {
         m_accumulatedOffset += offset;
     } else {
         applyAccumulatedOffset();
         if (m_accumulatingTransform && m_accumulatedTransform) {
             // If we're accumulating into an existing transform, apply the translation.
             translateTransform(offset);
-
-            // Then flatten if necessary.
-            if (accumulate == FlattenTransform)
-                flatten();
         } else {
             // Just move the point and/or quad.
             translateMappedCoordinates(offset);
         }
     }
     m_accumulatingTransform = accumulate == AccumulateTransform;
 }
 
 void TransformState::applyAccumulatedOffset()
 {
@@ skipping 109 matching lines @@
 
     // We could throw away m_accumulatedTransform if we wanted to here, but that
     // would cause thrash when traversing hierarchies with alternating
     // preserve-3d and flat elements.
     if (m_accumulatedTransform)
         m_accumulatedTransform->makeIdentity();
     m_accumulatingTransform = false;
 }
 
 } // namespace blink