cc: Turn SharedQuadState into a struct-like class similar to DrawQuads.

cc/test/layer_test_common.cc

 // Copyright 2012 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/test/layer_test_common.h"
 
 #include "cc/draw_quad.h"
 #include "cc/math_util.h"
 #include "cc/region.h"
 #include "cc/render_pass.h"
@@ skipping 20 matching lines @@
 
     return false;
 }
 
 void verifyQuadsExactlyCoverRect(const cc::QuadList& quads,
                                  const gfx::Rect& rect) {
     cc::Region remaining = rect;
 
     for (size_t i = 0; i < quads.size(); ++i) {
         cc::DrawQuad* quad = quads[i];
-        gfx::RectF quadRectF = cc::MathUtil::mapClippedRect(quad->shared_quad_state->quadTransform, gfx::RectF(quad->rect));
+        gfx::RectF quadRectF = cc::MathUtil::mapClippedRect(quad->quadTransform(), gfx::RectF(quad->rect));
 
         // Before testing for exact coverage in the integer world, assert that rounding
         // will not round the rect incorrectly.
         ASSERT_TRUE(canRectFBeSafelyRoundedToRect(quadRectF));
 
         gfx::Rect quadRect = gfx::ToEnclosingRect(quadRectF);
 
         EXPECT_TRUE(rect.Contains(quadRect)) << quadString << i;
         EXPECT_TRUE(remaining.Contains(quadRect)) << quadString << i;
         remaining.Subtract(quadRect);
     }
 
     EXPECT_TRUE(remaining.IsEmpty());
 }
 
 }  // namespace LayerTestCommon