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

cc/base/float_quad_unittest.cc

 // Copyright 2011 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.
 
 #include "cc/base/math_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/quad_f.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 namespace {
 
 // TODO(danakj) Move this test to ui/gfx/ when we don't need MathUtil::MapQuad.
 TEST(FloatQuadTest, IsRectilinearTest) {
   const int kNumRectilinear = 8;
   gfx::Transform rectilinear_trans[kNumRectilinear];
   rectilinear_trans[1].Rotate(90.f);
   rectilinear_trans[2].Rotate(180.f);
   rectilinear_trans[3].Rotate(270.f);
-  rectilinear_trans[4].SkewX(0.00000000001f);
-  rectilinear_trans[5].SkewY(0.00000000001f);
+  rectilinear_trans[4].Skew(0.00000000001f, 0.0f);
+  rectilinear_trans[5].Skew(0.0f, 0.00000000001f);
   rectilinear_trans[6].Scale(0.00001f, 0.00001f);
   rectilinear_trans[6].Rotate(180.f);
   rectilinear_trans[7].Scale(100000.f, 100000.f);
   rectilinear_trans[7].Rotate(180.f);
 
   gfx::QuadF original(
       gfx::RectF(0.01010101f, 0.01010101f, 100.01010101f, 100.01010101f));
 
   for (int i = 0; i < kNumRectilinear; ++i) {
     bool clipped = false;
     gfx::QuadF quad =
         MathUtil::MapQuad(rectilinear_trans[i], original, &clipped);
     ASSERT_TRUE(!clipped) << "case " << i;
     EXPECT_TRUE(quad.IsRectilinear()) << "case " << i;
   }
 
   const int kNumNonRectilinear = 10;
   gfx::Transform non_rectilinear_trans[kNumNonRectilinear];
   non_rectilinear_trans[0].Rotate(359.9999f);
   non_rectilinear_trans[1].Rotate(0.0000001f);
   non_rectilinear_trans[2].Rotate(89.9999f);
   non_rectilinear_trans[3].Rotate(90.00001f);
   non_rectilinear_trans[4].Rotate(179.9999f);
   non_rectilinear_trans[5].Rotate(180.00001f);
   non_rectilinear_trans[6].Rotate(269.9999f);
   non_rectilinear_trans[7].Rotate(270.0001f);
-  non_rectilinear_trans[8].SkewX(0.00001f);
-  non_rectilinear_trans[9].SkewY(0.00001f);
+  non_rectilinear_trans[8].Skew(0.00001f, 0.0f);
+  non_rectilinear_trans[9].Skew(0.0f, 0.00001f);
 
   for (int i = 0; i < kNumNonRectilinear; ++i) {
     bool clipped = false;
     gfx::QuadF quad =
         MathUtil::MapQuad(non_rectilinear_trans[i], original, &clipped);
     ASSERT_TRUE(!clipped) << "case " << i;
     EXPECT_FALSE(quad.IsRectilinear()) << "case " << i;
   }
 }
 
 }  // namespace
 }  // namespace cc