Apply skew on both axes together rather than sequentially on Compositor thread

cc/animation/transform_operation.cc

 // Copyright 2013 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.
 
 // Needed on Windows to get |M_PI| from <cmath>
 #ifdef _WIN32
 #define _USE_MATH_DEFINES
 #endif
 
 #include <algorithm>
@@ skipping 139 matching lines @@
     result->Scale3d(BlendSkMScalars(from_x, to_x, progress),
                     BlendSkMScalars(from_y, to_y, progress),
                     BlendSkMScalars(from_z, to_z, progress));
     break;
   }
   case TransformOperation::TRANSFORM_OPERATION_SKEW: {
     SkMScalar from_x = IsOperationIdentity(from) ? 0 : from->skew.x;
     SkMScalar from_y = IsOperationIdentity(from) ? 0 : from->skew.y;
     SkMScalar to_x = IsOperationIdentity(to) ? 0 : to->skew.x;
     SkMScalar to_y = IsOperationIdentity(to) ? 0 : to->skew.y;
-    result->SkewX(BlendSkMScalars(from_x, to_x, progress));
-    result->SkewY(BlendSkMScalars(from_y, to_y, progress));
+    result->Skew(BlendSkMScalars(from_x, to_x, progress),
+                 BlendSkMScalars(from_y, to_y, progress));
     break;
   }
   case TransformOperation::TRANSFORM_OPERATION_PERSPECTIVE: {
     SkMScalar from_perspective_depth =
         IsOperationIdentity(from) ? std::numeric_limits<SkMScalar>::max()
                                   : from->perspective_depth;
     SkMScalar to_perspective_depth =
         IsOperationIdentity(to) ? std::numeric_limits<SkMScalar>::max()
                                 : to->perspective_depth;
     if (from_perspective_depth == 0.f || to_perspective_depth == 0.f)
@@ skipping 258 matching lines @@
       return true;
     }
     case TransformOperation::TRANSFORM_OPERATION_MATRIX:
       return false;
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace cc