Migrate most of cc/ from WebKit::WebTransformationMatrix to gfx::Transform

cc/quad_culler_unittest.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/quad_culler.h"
 
 #include "cc/append_quads_data.h"
 #include "cc/layer_tiling_data.h"
 #include "cc/math_util.h"
 #include "cc/occlusion_tracker.h"
 #include "cc/overdraw_metrics.h"
 #include "cc/single_thread_proxy.h"
 #include "cc/tile_draw_quad.h"
 #include "cc/tiled_layer_impl.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include <public/WebTransformationMatrix.h>
+#include "ui/gfx/transform.h"
 
-using WebKit::WebTransformationMatrix;
+using gfx::Transform;
 
 namespace cc {
 namespace {
 
 class TestOcclusionTrackerImpl : public OcclusionTrackerImpl {
 public:
     TestOcclusionTrackerImpl(const gfx::Rect& scissorRectInScreen, bool recordMetricsForFrame = true)
         : OcclusionTrackerImpl(scissorRectInScreen, recordMetricsForFrame)
         , m_scissorRectInScreen(scissorRectInScreen)
     {
     }
 
 protected:
     virtual gfx::Rect layerScissorRectInTargetSurface(const LayerImpl* layer) const { return m_scissorRectInScreen; }
 
 private:
     gfx::Rect m_scissorRectInScreen;
 };
 
 typedef LayerIterator<LayerImpl, std::vector<LayerImpl*>, RenderSurfaceImpl, LayerIteratorActions::FrontToBack> LayerIteratorType;
 
-static scoped_ptr<TiledLayerImpl> makeLayer(TiledLayerImpl* parent, const WebTransformationMatrix& drawTransform, const gfx::Rect& layerRect, float opacity, bool opaque, const gfx::Rect& layerOpaqueRect, std::vector<LayerImpl*>& surfaceLayerList)
+static scoped_ptr<TiledLayerImpl> makeLayer(TiledLayerImpl* parent, const Transform& drawTransform, const gfx::Rect& layerRect, float opacity, bool opaque, const gfx::Rect& layerOpaqueRect, std::vector<LayerImpl*>& surfaceLayerList)
 {
     scoped_ptr<TiledLayerImpl> layer = TiledLayerImpl::create(1);
     scoped_ptr<LayerTilingData> tiler = LayerTilingData::create(gfx::Size(100, 100), LayerTilingData::NoBorderTexels);
     tiler->setBounds(layerRect.size());
     layer->setTilingData(*tiler);
     layer->setSkipsDraw(false);
     layer->setDrawTransform(drawTransform);
     layer->setScreenSpaceTransform(drawTransform);
     layer->setVisibleContentRect(layerRect);
     layer->setDrawOpacity(opacity);
@@ skipping 30 matching lines @@
     AppendQuadsData data;
     layer->appendQuads(quadCuller, data);
     occlusionTracker.leaveLayer(it);
     ++it;
 }
 
 #define DECLARE_AND_INITIALIZE_TEST_QUADS               \
     QuadList quadList;                                  \
     SharedQuadStateList sharedStateList;                \
     std::vector<LayerImpl*> renderSurfaceLayerList;     \
-    WebTransformationMatrix childTransform;             \
+    Transform childTransform;             \

[danakj, 2012/11/24 02:34:54]

move the \

     gfx::Size rootSize = gfx::Size(300, 300);           \
     gfx::Rect rootRect = gfx::Rect(rootSize);           \
     gfx::Size childSize = gfx::Size(200, 200);          \
     gfx::Rect childRect = gfx::Rect(childSize);
 
 TEST(QuadCullerTest, verifyNoCulling)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
-    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), WebTransformationMatrix(), childRect, 1, false, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), Transform(), childRect, 1, false, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 13u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 90000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 40000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 0, 1);
 }
 
 TEST(QuadCullerTest, verifyCullChildLinesUpTopLeft)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
-    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), WebTransformationMatrix(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), Transform(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 9u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 90000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 40000, 1);
 }
 
 TEST(QuadCullerTest, verifyCullWhenChildOpacityNotOne)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 0.9f, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 13u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 90000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 40000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 0, 1);
 }
 
 TEST(QuadCullerTest, verifyCullWhenChildOpaqueFlagFalse)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, false, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 13u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 90000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 40000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 0, 1);
 }
 
 TEST(QuadCullerTest, verifyCullCenterTileOnly)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    childTransform.translate(50, 50);
+    childTransform.PreconcatTranslate(50, 50);
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     ASSERT_EQ(quadList.size(), 12u);
 
     gfx::Rect quadVisibleRect1 = quadList[5]->visible_rect;
     EXPECT_EQ(quadVisibleRect1.height(), 50);
@@ skipping 12 matching lines @@
 
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 100000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 30000, 1);
 }
 
 TEST(QuadCullerTest, verifyCullCenterTileNonIntegralSize1)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    childTransform.translate(100, 100);
+    childTransform.PreconcatTranslate(100, 100);
 
     // Make the root layer's quad have extent (99.1, 99.1) -> (200.9, 200.9) to make
     // sure it doesn't get culled due to transform rounding.
-    WebTransformationMatrix rootTransform;
-    rootTransform.translate(99.1, 99.1);
-    rootTransform.scale(1.018);
+    Transform rootTransform;
+    rootTransform.PreconcatTranslate(99.1, 99.1);
+    rootTransform.PreconcatScale(1.018, 1.018);
 
     rootRect = childRect = gfx::Rect(0, 0, 100, 100);
 
     scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, rootTransform, rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 2u);
 
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 20363, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 0, 1);
 }
 
 TEST(QuadCullerTest, verifyCullCenterTileNonIntegralSize2)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
     // Make the child's quad slightly smaller than, and centred over, the root layer tile.
     // Verify the child does not cause the quad below to be culled due to rounding.
-    childTransform.translate(100.1, 100.1);
-    childTransform.scale(0.982);
+    childTransform.PreconcatTranslate(100.1, 100.1);
+    childTransform.PreconcatScale(0.982, 0.982);
 
-    WebTransformationMatrix rootTransform;
-    rootTransform.translate(100, 100);
+    Transform rootTransform;
+    rootTransform.PreconcatTranslate(100, 100);
 
     rootRect = childRect = gfx::Rect(0, 0, 100, 100);
 
     scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, rootTransform, rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 2u);
 
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 19643, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 0, 1);
 }
 
 TEST(QuadCullerTest, verifyCullChildLinesUpBottomRight)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    childTransform.translate(100, 100);
+    childTransform.PreconcatTranslate(100, 100);
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 9u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 90000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 40000, 1);
 }
 
 TEST(QuadCullerTest, verifyCullSubRegion)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    childTransform.translate(50, 50);
+    childTransform.PreconcatTranslate(50, 50);
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     gfx::Rect childOpaqueRect(childRect.x() + childRect.width() / 4, childRect.y() + childRect.height() / 4, childRect.width() / 2, childRect.height() / 2);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, false, childOpaqueRect, renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 12u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 90000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 30000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 10000, 1);
 }
 
 TEST(QuadCullerTest, verifyCullSubRegion2)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    childTransform.translate(50, 10);
+    childTransform.PreconcatTranslate(50, 10);
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     gfx::Rect childOpaqueRect(childRect.x() + childRect.width() / 4, childRect.y() + childRect.height() / 4, childRect.width() / 2, childRect.height() * 3 / 4);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, false, childOpaqueRect, renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 12u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 90000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 25000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 15000, 1);
 }
 
 TEST(QuadCullerTest, verifyCullSubRegionCheckOvercull)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    childTransform.translate(50, 49);
+    childTransform.PreconcatTranslate(50, 49);
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     gfx::Rect childOpaqueRect(childRect.x() + childRect.width() / 4, childRect.y() + childRect.height() / 4, childRect.width() / 2, childRect.height() / 2);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, false, childOpaqueRect, renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 13u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 90000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 30000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 10000, 1);
 }
 
 TEST(QuadCullerTest, verifyNonAxisAlignedQuadsDontOcclude)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
     // Use a small rotation so as to not disturb the geometry significantly.
-    childTransform.rotate(1);
+    childTransform.PreconcatRotate(1);
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), childTransform, childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 13u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 130000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 0, 1);
 }
 
 // This test requires some explanation: here we are rotating the quads to be culled.
 // The 2x2 tile child layer remains in the top-left corner, unrotated, but the 3x3
 // tile parent layer is rotated by 1 degree. Of the four tiles the child would
 // normally occlude, three will move (slightly) out from under the child layer, and
 // one moves further under the child. Only this last tile should be culled.
 TEST(QuadCullerTest, verifyNonAxisAlignedQuadsSafelyCulled)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
     // Use a small rotation so as to not disturb the geometry significantly.
-    WebTransformationMatrix parentTransform;
-    parentTransform.rotate(1);
+    Transform parentTransform;
+    parentTransform.PreconcatRotate(1);
 
     scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, parentTransform, rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
-    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), WebTransformationMatrix(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), Transform(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(-100, -100, 1000, 1000));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 12u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 100600, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 29400, 1);
 }
 
 TEST(QuadCullerTest, verifyCullOutsideScissorOverTile)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
-    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), WebTransformationMatrix(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), Transform(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(200, 100, 100, 100));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 1u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 10000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 120000, 1);
 }
 
 TEST(QuadCullerTest, verifyCullOutsideScissorOverCulledTile)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
-    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), WebTransformationMatrix(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), Transform(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(100, 100, 100, 100));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 1u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 10000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 120000, 1);
 }
 
 TEST(QuadCullerTest, verifyCullOutsideScissorOverPartialTiles)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
-    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), WebTransformationMatrix(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), Transform(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(50, 50, 200, 200));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 9u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 40000, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 90000, 1);
 }
 
 TEST(QuadCullerTest, verifyCullOutsideScissorOverNoTiles)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
-    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), WebTransformationMatrix(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), Transform(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(500, 500, 100, 100));
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 0u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 130000, 1);
 }
 
 TEST(QuadCullerTest, verifyWithoutMetrics)
 {
     DECLARE_AND_INITIALIZE_TEST_QUADS
 
-    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, WebTransformationMatrix(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
-    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), WebTransformationMatrix(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> rootLayer = makeLayer(0, Transform(), rootRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
+    scoped_ptr<TiledLayerImpl> childLayer = makeLayer(rootLayer.get(), Transform(), childRect, 1, true, gfx::Rect(), renderSurfaceLayerList);
     TestOcclusionTrackerImpl occlusionTracker(gfx::Rect(50, 50, 200, 200), false);
     LayerIteratorType it = LayerIteratorType::begin(&renderSurfaceLayerList);
 
     appendQuads(quadList, sharedStateList, childLayer.get(), it, occlusionTracker);
     appendQuads(quadList, sharedStateList, rootLayer.get(), it, occlusionTracker);
     EXPECT_EQ(quadList.size(), 9u);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnOpaque(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsDrawnTranslucent(), 0, 1);
     EXPECT_NEAR(occlusionTracker.overdrawMetrics().pixelsCulledForDrawing(), 0, 1);
 }
 
 }  // namespace
 }  // namespace cc