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

cc/layer_tree_host_impl_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/layer_tree_host_impl.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 30 matching lines @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/size_conversions.h"
 #include "ui/gfx/vector2d_conversions.h"
 #include <public/WebVideoFrame.h>
 #include <public/WebVideoFrameProvider.h>
 
 using namespace LayerTestCommon;
 using namespace WebKit;
 using namespace WebKitTests;
 
+using gfx::Transform;
 using media::VideoFrame;
 using ::testing::Mock;
 using ::testing::Return;
 using ::testing::AnyNumber;
 using ::testing::AtLeast;
 using ::testing::_;
 
 namespace cc {
 namespace {
 
@@ skipping 484 matching lines @@
         return;
 
     setupScrollAndContentsLayers(gfx::Size(100, 100));
     m_hostImpl->setViewportSize(gfx::Size(50, 50), gfx::Size(50, 50));
     initializeRendererAndDrawFrame();
 
     LayerImpl* scrollLayer = m_hostImpl->rootScrollLayer();
     DCHECK(scrollLayer);
 
     const float minPageScale = 1, maxPageScale = 4;
-    const WebTransformationMatrix identityScaleTransform;
+    const Transform identityScaleTransform;
 
     // The impl-based pinch zoom should not adjust the max scroll position.
     {
         m_hostImpl->setPageScaleFactorAndLimits(1, minPageScale, maxPageScale);
         scrollLayer->setImplTransform(identityScaleTransform);
         scrollLayer->setScrollDelta(gfx::Vector2d());
 
         float pageScaleDelta = 2;
         m_hostImpl->pinchGestureBegin();
         m_hostImpl->pinchGestureUpdate(pageScaleDelta, gfx::Point(50, 50));
@@ skipping 33 matching lines @@
 {
     setupScrollAndContentsLayers(gfx::Size(100, 100));
     m_hostImpl->setViewportSize(gfx::Size(50, 50), gfx::Size(50, 50));
     initializeRendererAndDrawFrame();
 
     LayerImpl* scrollLayer = m_hostImpl->rootScrollLayer();
     DCHECK(scrollLayer);
 
     const float minPageScale = m_hostImpl->settings().pageScalePinchZoomEnabled ? 1 : 0.5;
     const float maxPageScale = 4;
-    const WebTransformationMatrix identityScaleTransform;
+    const Transform identityScaleTransform;
 
     // Basic pinch zoom in gesture
     {
         m_hostImpl->setPageScaleFactorAndLimits(1, minPageScale, maxPageScale);
         scrollLayer->setImplTransform(identityScaleTransform);
         scrollLayer->setScrollDelta(gfx::Vector2d());
 
         float pageScaleDelta = 2;
         m_hostImpl->pinchGestureBegin();
         m_hostImpl->pinchGestureUpdate(pageScaleDelta, gfx::Point(50, 50));
@@ skipping 91 matching lines @@
 
     LayerImpl* scrollLayer = m_hostImpl->rootScrollLayer();
     DCHECK(scrollLayer);
 
     const float minPageScale = 0.5;
     const float maxPageScale = 4;
     const base::TimeTicks startTime = base::TimeTicks() + base::TimeDelta::FromSeconds(1);
     const base::TimeDelta duration = base::TimeDelta::FromMilliseconds(100);
     const base::TimeTicks halfwayThroughAnimation = startTime + duration / 2;
     const base::TimeTicks endTime = startTime + duration;
-    const WebTransformationMatrix identityScaleTransform;
+    const Transform identityScaleTransform;
 
     // Non-anchor zoom-in
     {
         m_hostImpl->setPageScaleFactorAndLimits(1, minPageScale, maxPageScale);
         scrollLayer->setImplTransform(identityScaleTransform);
         scrollLayer->setScrollOffset(gfx::Vector2d(50, 50));
 
         m_hostImpl->startPageScaleAnimation(gfx::Vector2d(0, 0), false, 2, startTime, duration);
         m_hostImpl->animate(halfwayThroughAnimation, base::Time());
         EXPECT_TRUE(m_didRequestRedraw);
@@ skipping 441 matching lines @@
     EXPECT_FALSE(m_didRequestCommit);
 }
 
 TEST_P(LayerTreeHostImplTest, scrollMissesBackfacingChild)
 {
     gfx::Size surfaceSize(10, 10);
     scoped_ptr<LayerImpl> root = LayerImpl::create(1);
     scoped_ptr<LayerImpl> child = createScrollableLayer(2, surfaceSize);
     m_hostImpl->setViewportSize(surfaceSize, surfaceSize);
 
-    WebTransformationMatrix matrix;
-    matrix.rotate3d(180, 0, 0);
+    Transform matrix;
+    MathUtil::rotateEulerAngles(&matrix, 180, 0, 0);
     child->setTransform(matrix);
     child->setDoubleSided(false);
 
     root->addChild(child.Pass());
     m_hostImpl->setRootLayer(root.Pass());
     initializeRendererAndDrawFrame();
 
     // Scroll event is ignored because the scrollable layer is not facing the viewer and there is
     // nothing scrollable behind it.
     EXPECT_EQ(m_hostImpl->scrollBegin(gfx::Point(5, 5), InputHandlerClient::Wheel), InputHandlerClient::ScrollIgnored);
@@ skipping 42 matching lines @@
         // The scale should apply to the scroll delta.
         expectedScrollDelta = gfx::ToFlooredVector2d(gfx::ScaleVector2d(expectedScrollDelta, pageScale));
     }
     scoped_ptr<ScrollAndScaleSet> scrollInfo = m_hostImpl->processScrollDeltas();
     expectContains(*scrollInfo.get(), m_hostImpl->rootLayer()->id(), expectedScrollDelta);
 
     // The scroll range should also have been updated.
     EXPECT_EQ(m_hostImpl->rootLayer()->maxScrollOffset(), expectedMaxScroll);
 
     // The page scale delta remains constant because the impl thread did not scale.
-    EXPECT_EQ(m_hostImpl->rootLayer()->implTransform(), WebTransformationMatrix());
+    EXPECT_EQ(m_hostImpl->rootLayer()->implTransform(), Transform());
 }
 
 TEST_P(LayerTreeHostImplTest, scrollRootAndChangePageScaleOnImplThread)
 {
     gfx::Size surfaceSize(10, 10);
     float pageScale = 2;
     scoped_ptr<LayerImpl> root = createScrollableLayer(1, surfaceSize);
     m_hostImpl->setRootLayer(root.Pass());
     m_hostImpl->setViewportSize(surfaceSize, surfaceSize);
     m_hostImpl->setPageScaleFactorAndLimits(1, 1, pageScale);
@@ skipping 13 matching lines @@
     m_hostImpl->updateRootScrollLayerImplTransform();
 
     // The scroll delta is not scaled because the main thread did not scale.
     scoped_ptr<ScrollAndScaleSet> scrollInfo = m_hostImpl->processScrollDeltas();
     expectContains(*scrollInfo.get(), m_hostImpl->rootLayer()->id(), expectedScrollDelta);
 
     // The scroll range should also have been updated.
     EXPECT_EQ(m_hostImpl->rootLayer()->maxScrollOffset(), expectedMaxScroll);
 
     // The page scale delta should match the new scale on the impl side.
-    WebTransformationMatrix expectedScale;
-    expectedScale.scale(pageScale);
+    Transform expectedScale;
+    expectedScale.PreconcatScale(pageScale, pageScale);
     EXPECT_EQ(m_hostImpl->rootLayer()->implTransform(), expectedScale);
 }
 
 TEST_P(LayerTreeHostImplTest, pageScaleDeltaAppliedToRootScrollLayerOnly)
 {
     gfx::Size surfaceSize(10, 10);
     float defaultPageScale = 1;
-    WebTransformationMatrix defaultPageScaleMatrix;
+    Transform defaultPageScaleMatrix;
 
     float newPageScale = 2;
-    WebTransformationMatrix newPageScaleMatrix;
-    newPageScaleMatrix.scale(newPageScale);
+    Transform newPageScaleMatrix;
+    newPageScaleMatrix.PreconcatScale(newPageScale, newPageScale);
 
     // Create a normal scrollable root layer and another scrollable child layer.
     setupScrollAndContentsLayers(surfaceSize);
     LayerImpl* root = m_hostImpl->rootLayer();
     LayerImpl* child = root->children()[0];
 
     scoped_ptr<LayerImpl> scrollableChild = createScrollableLayer(3, surfaceSize);
     child->addChild(scrollableChild.Pass());
     LayerImpl* grandChild = child->children()[0];
 
     // Set new page scale on impl thread by pinching.
     m_hostImpl->pinchGestureBegin();
     m_hostImpl->pinchGestureUpdate(newPageScale, gfx::Point());
     m_hostImpl->pinchGestureEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
     // The page scale delta should only be applied to the scrollable root layer.
     EXPECT_EQ(root->implTransform(), newPageScaleMatrix);
     EXPECT_EQ(child->implTransform(), defaultPageScaleMatrix);
     EXPECT_EQ(grandChild->implTransform(), defaultPageScaleMatrix);
 
     // Make sure all the layers are drawn with the page scale delta applied, i.e., the page scale
     // delta on the root layer is applied hierarchically.
     LayerTreeHostImpl::FrameData frame;
     EXPECT_TRUE(m_hostImpl->prepareToDraw(frame));
     m_hostImpl->drawLayers(frame);
     m_hostImpl->didDrawAllLayers(frame);
 
-    EXPECT_EQ(root->drawTransform().m11(), newPageScale);
-    EXPECT_EQ(root->drawTransform().m22(), newPageScale);
-    EXPECT_EQ(child->drawTransform().m11(), newPageScale);
-    EXPECT_EQ(child->drawTransform().m22(), newPageScale);
-    EXPECT_EQ(grandChild->drawTransform().m11(), newPageScale);
-    EXPECT_EQ(grandChild->drawTransform().m22(), newPageScale);
+    EXPECT_EQ(root->drawTransform().matrix().getDouble(0, 0), newPageScale);
+    EXPECT_EQ(root->drawTransform().matrix().getDouble(1, 1), newPageScale);
+    EXPECT_EQ(child->drawTransform().matrix().getDouble(0, 0), newPageScale);
+    EXPECT_EQ(child->drawTransform().matrix().getDouble(1, 1), newPageScale);
+    EXPECT_EQ(grandChild->drawTransform().matrix().getDouble(0, 0), newPageScale);
+    EXPECT_EQ(grandChild->drawTransform().matrix().getDouble(1, 1), newPageScale);
 }
 
 TEST_P(LayerTreeHostImplTest, scrollChildAndChangePageScaleOnMainThread)
 {
     gfx::Size surfaceSize(10, 10);
     scoped_ptr<LayerImpl> root = LayerImpl::create(1);
     root->setBounds(surfaceSize);
     root->setContentBounds(surfaceSize);
     // Also mark the root scrollable so it becomes the root scroll layer.
     root->setScrollable(true);
@@ skipping 21 matching lines @@
         // The scale should apply to the scroll delta.
         expectedScrollDelta = gfx::ToFlooredVector2d(gfx::ScaleVector2d(expectedScrollDelta, pageScale));
     }
     scoped_ptr<ScrollAndScaleSet> scrollInfo = m_hostImpl->processScrollDeltas();
     expectContains(*scrollInfo.get(), scrollLayerId, expectedScrollDelta);
 
     // The scroll range should not have changed.
     EXPECT_EQ(child->maxScrollOffset(), expectedMaxScroll);
 
     // The page scale delta remains constant because the impl thread did not scale.
-    WebTransformationMatrix identityTransform;
-    EXPECT_EQ(child->implTransform(), WebTransformationMatrix());
+    Transform identityTransform;
+    EXPECT_EQ(child->implTransform(), Transform());
 }
 
 TEST_P(LayerTreeHostImplTest, scrollChildBeyondLimit)
 {
     // Scroll a child layer beyond its maximum scroll range and make sure the
     // parent layer is scrolled on the axis on which the child was unable to
     // scroll.
     gfx::Size surfaceSize(10, 10);
     scoped_ptr<LayerImpl> root = createScrollableLayer(1, surfaceSize);
 
@@ skipping 67 matching lines @@
 
     // Scrolling should still work even though we did not draw yet.
     EXPECT_EQ(m_hostImpl->scrollBegin(gfx::Point(5, 5), InputHandlerClient::Wheel), InputHandlerClient::ScrollStarted);
 }
 
 TEST_P(LayerTreeHostImplTest, scrollAxisAlignedRotatedLayer)
 {
     setupScrollAndContentsLayers(gfx::Size(100, 100));
 
     // Rotate the root layer 90 degrees counter-clockwise about its center.
-    WebTransformationMatrix rotateTransform;
-    rotateTransform.rotate(-90);
+    Transform rotateTransform;
+    rotateTransform.PreconcatRotate(-90);
     m_hostImpl->rootLayer()->setTransform(rotateTransform);
 
     gfx::Size surfaceSize(50, 50);
     m_hostImpl->setViewportSize(surfaceSize, surfaceSize);
     initializeRendererAndDrawFrame();
 
     // Scroll to the right in screen coordinates with a gesture.
     gfx::Vector2d gestureScrollDelta(10, 0);
     EXPECT_EQ(m_hostImpl->scrollBegin(gfx::Point(0, 0), InputHandlerClient::Gesture), InputHandlerClient::ScrollStarted);
     m_hostImpl->scrollBy(gfx::Point(), gestureScrollDelta);
@@ skipping 16 matching lines @@
 }
 
 TEST_P(LayerTreeHostImplTest, scrollNonAxisAlignedRotatedLayer)
 {
     setupScrollAndContentsLayers(gfx::Size(100, 100));
     int childLayerId = 3;
     float childLayerAngle = -20;
 
     // Create a child layer that is rotated to a non-axis-aligned angle.
     scoped_ptr<LayerImpl> child = createScrollableLayer(childLayerId, m_hostImpl->rootLayer()->contentBounds());
-    WebTransformationMatrix rotateTransform;
-    rotateTransform.translate(-50, -50);
-    rotateTransform.rotate(childLayerAngle);
-    rotateTransform.translate(50, 50);
+    Transform rotateTransform;
+    rotateTransform.PreconcatTranslate(-50, -50);
+    rotateTransform.PreconcatRotate(childLayerAngle);
+    rotateTransform.PreconcatTranslate(50, 50);
     child->setTransform(rotateTransform);
 
     // Only allow vertical scrolling.
     child->setMaxScrollOffset(gfx::Vector2d(0, child->contentBounds().height()));
     m_hostImpl->rootLayer()->addChild(child.Pass());
 
     gfx::Size surfaceSize(50, 50);
     m_hostImpl->setViewportSize(surfaceSize, surfaceSize);
     initializeRendererAndDrawFrame();
 
@@ skipping 35 matching lines @@
         expectContains(*scrollInfo.get(), m_hostImpl->rootLayer()->id(), expectedRootScrollDelta);
     }
 }
 
 TEST_P(LayerTreeHostImplTest, scrollScaledLayer)
 {
     setupScrollAndContentsLayers(gfx::Size(100, 100));
 
     // Scale the layer to twice its normal size.
     int scale = 2;
-    WebTransformationMatrix scaleTransform;
-    scaleTransform.scale(scale);
+    Transform scaleTransform;
+    scaleTransform.PreconcatScale(scale, scale);
     m_hostImpl->rootLayer()->setTransform(scaleTransform);
 
     gfx::Size surfaceSize(50, 50);
     m_hostImpl->setViewportSize(surfaceSize, surfaceSize);
     initializeRendererAndDrawFrame();
 
     // Scroll down in screen coordinates with a gesture.
     gfx::Vector2d scrollDelta(0, 10);
     EXPECT_EQ(m_hostImpl->scrollBegin(gfx::Point(0, 0), InputHandlerClient::Gesture), InputHandlerClient::ScrollStarted);
     m_hostImpl->scrollBy(gfx::Point(), scrollDelta);
@@ skipping 1172 matching lines @@
         : ScrollbarLayerImpl(id)
     {
     }
 };
 
 static inline scoped_ptr<RenderPass> createRenderPassWithResource(ResourceProvider* provider)
 {
     ResourceProvider::ResourceId resourceId = provider->createResource(0, gfx::Size(1, 1), GL_RGBA, ResourceProvider::TextureUsageAny);
 
     scoped_ptr<TestRenderPass> pass = TestRenderPass::Create();
-    pass->SetNew(RenderPass::Id(1, 1), gfx::Rect(0, 0, 1, 1), gfx::Rect(0, 0, 1, 1), WebTransformationMatrix());
+    pass->SetNew(RenderPass::Id(1, 1), gfx::Rect(0, 0, 1, 1), gfx::Rect(0, 0, 1, 1), Transform());
     scoped_ptr<SharedQuadState> sharedState = SharedQuadState::Create();
-    sharedState->SetAll(WebTransformationMatrix(), gfx::Rect(0, 0, 1, 1), gfx::Rect(0, 0, 1, 1), gfx::Rect(0, 0, 1, 1), false, 1);
+    sharedState->SetAll(Transform(), gfx::Rect(0, 0, 1, 1), gfx::Rect(0, 0, 1, 1), gfx::Rect(0, 0, 1, 1), false, 1);
     scoped_ptr<TextureDrawQuad> quad = TextureDrawQuad::Create();
     quad->SetNew(sharedState.get(), gfx::Rect(0, 0, 1, 1), gfx::Rect(0, 0, 1, 1), resourceId, false, gfx::RectF(0, 0, 1, 1), false);
 
     pass->AppendSharedQuadState(sharedState.Pass());
     pass->AppendQuad(quad.PassAs<DrawQuad>());
 
     return pass.PassAs<RenderPass>();
 }
 
 TEST_P(LayerTreeHostImplTest, dontUseOldResourcesAfterLostContext)
@@ skipping 399 matching lines @@
 
     // Surface layer is the layer that changes its opacity
     // It will contain other layers that draw content.
     surfaceLayerPtr->setOpacity(0.5f); // This will cause it to have a surface
 
     addDrawingLayerTo(surfaceLayerPtr, 4, gfx::Rect(0, 0, 100, 3), 0);
     addDrawingLayerTo(surfaceLayerPtr, 5, gfx::Rect(0, 97, 100, 3), 0);
 
     // Rotation will put part of the child ouside the bounds of the root layer.
     // Nevertheless, the child layers should be drawn.
-    WebTransformationMatrix transform = surfaceLayerPtr->transform();
-    transform.translate(50, 50);
-    transform.rotate(35);
-    transform.translate(-50, -50);
+    Transform transform = surfaceLayerPtr->transform();
+    transform.PreconcatTranslate(50, 50);
+    transform.PreconcatRotate(35);
+    transform.PreconcatTranslate(-50, -50);
     surfaceLayerPtr->setTransform(transform);
 
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive two render passes, each with one quad
         ASSERT_EQ(2U, frame.renderPasses.size());
         EXPECT_EQ(2U, frame.renderPasses[0]->quad_list.size());
         ASSERT_EQ(1U, frame.renderPasses[1]->quad_list.size());
@@ skipping 10 matching lines @@
 
         EXPECT_EQ(DrawQuad::RENDER_PASS, frame.renderPasses[1]->quad_list[0]->material);
         const RenderPassDrawQuad* quad = RenderPassDrawQuad::MaterialCast(frame.renderPasses[1]->quad_list[0]);
         EXPECT_FALSE(quad->contents_changed_since_last_frame.IsEmpty());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     transform = surfaceLayerPtr->transform();
-    transform.translate(50, 50);
-    transform.rotate(-35);
-    transform.translate(-50, -50);
+    transform.PreconcatTranslate(50, 50);
+    transform.PreconcatRotate(-35);
+    transform.PreconcatTranslate(-50, -50);
     surfaceLayerPtr->setTransform(transform);
 
     // The surface is now aligned again, and the clipped parts are exposed.
     // Since the layers were clipped, even though the render surface size
     // was not changed, the texture should not be saved.
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive two render passes, each with one quad
@@ skipping 72 matching lines @@
         EXPECT_EQ(2U, frame.renderPasses[1]->quad_list.size());
         EXPECT_EQ(2U, frame.renderPasses[2]->quad_list.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // "Unocclude" surface S1 and repeat draw.
     // Must remove S2's render pass since it's cached;
     // Must keep S1 quads because texture contained external occlusion.
-    WebTransformationMatrix transform = layerS2Ptr->transform();
-    transform.translate(150, 150);
+    Transform transform = layerS2Ptr->transform();
+    transform.PreconcatTranslate(150, 150);
     layerS2Ptr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive 2 render passes.
         // For Root, there are 2 quads
         // For S1, the number of quads depends on what got unoccluded, so not asserted beyond being positive.
         // For S2, there is no render pass
         ASSERT_EQ(2U, frame.renderPasses.size());
 
         EXPECT_GT(frame.renderPasses[0]->quad_list.size(), 0U);
         EXPECT_EQ(2U, frame.renderPasses[1]->quad_list.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // "Re-occlude" surface S1 and repeat draw.
     // Must remove S1's render pass since it is now available in full.
     // S2 has no change so must also be removed.
     transform = layerS2Ptr->transform();
-    transform.translate(-15, -15);
+    transform.PreconcatTranslate(-15, -15);
     layerS2Ptr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive 1 render pass - for the root.
         ASSERT_EQ(1U, frame.renderPasses.size());
 
         EXPECT_EQ(2U, frame.renderPasses[0]->quad_list.size());
 
@@ skipping 70 matching lines @@
         EXPECT_EQ(3U, frame.renderPasses[1]->quad_list.size());
         EXPECT_EQ(2U, frame.renderPasses[2]->quad_list.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // "Unocclude" surface S1 and repeat draw.
     // Must remove S2's render pass since it's cached;
     // Must keep S1 quads because texture contained external occlusion.
-    WebTransformationMatrix transform = layerS2Ptr->transform();
-    transform.translate(100, 100);
+    Transform transform = layerS2Ptr->transform();
+    transform.PreconcatTranslate(100, 100);
     layerS2Ptr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive 2 render passes.
         // For Root, there are 2 quads
         // For S1, the number of quads depends on what got unoccluded, so not asserted beyond being positive.
         // For S2, there is no render pass
         ASSERT_EQ(2U, frame.renderPasses.size());
 
         EXPECT_GT(frame.renderPasses[0]->quad_list.size(), 0U);
         EXPECT_EQ(2U, frame.renderPasses[1]->quad_list.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // "Re-occlude" surface S1 and repeat draw.
     // Must remove S1's render pass since it is now available in full.
     // S2 has no change so must also be removed.
     transform = layerS2Ptr->transform();
-    transform.translate(-15, -15);
+    transform.PreconcatTranslate(-15, -15);
     layerS2Ptr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive 1 render pass - for the root.
         ASSERT_EQ(1U, frame.renderPasses.size());
 
         EXPECT_EQ(2U, frame.renderPasses[0]->quad_list.size());
 
@@ skipping 61 matching lines @@
         EXPECT_EQ(3U, frame.renderPasses[1]->quad_list.size());
         EXPECT_EQ(2U, frame.renderPasses[2]->quad_list.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // "Unocclude" surface S1 and repeat draw.
     // Must remove S2's render pass since it's cached;
     // Must keep S1 quads because texture contained external occlusion.
-    WebTransformationMatrix transform = layerS2Ptr->transform();
-    transform.translate(300, 0);
+    Transform transform = layerS2Ptr->transform();
+    transform.PreconcatTranslate(300, 0);
     layerS2Ptr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive 2 render passes.
         // For Root, there are 2 quads
         // For S1, the number of quads depends on what got unoccluded, so not asserted beyond being positive.
         // For S2, there is no render pass
         ASSERT_EQ(2U, frame.renderPasses.size());
@@ skipping 32 matching lines @@
     root->setAnchorPoint(gfx::PointF(0, 0));
     root->setPosition(gfx::PointF(0, 0));
     root->setBounds(rootSize);
     root->setContentBounds(rootSize);
     root->setDrawsContent(true);
     root->setMasksToBounds(true);
     myHostImpl->setRootLayer(root.Pass());
 
     addDrawingLayerTo(rootPtr, 2, gfx::Rect(0, 0, 400, 400), &layerS1Ptr);
     layerS1Ptr->setForceRenderSurface(true);
-    WebTransformationMatrix transform = layerS1Ptr->transform();
-    transform.translate(200, 200);
-    transform.rotate(45);
-    transform.translate(-200, -200);
+    Transform transform = layerS1Ptr->transform();
+    transform.PreconcatTranslate(200, 200);
+    transform.PreconcatRotate(45);
+    transform.PreconcatTranslate(-200, -200);
     layerS1Ptr->setTransform(transform);
 
     addDrawingLayerTo(layerS1Ptr, 3, gfx::Rect(200, 0, 200, 400), 0); // L11
 
     // Initial draw - must receive all quads
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive 2 render passes.
@@ skipping 89 matching lines @@
         EXPECT_EQ(2U, frame.renderPasses[1]->quad_list.size());
         EXPECT_EQ(2U, frame.renderPasses[2]->quad_list.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // "Unocclude" surface S1 and repeat draw.
     // Must remove S2's render pass since it's cached;
     // Must keep S1 quads because texture contained external occlusion.
-    WebTransformationMatrix transform = layerS2Ptr->transform();
-    transform.translate(150, 150);
+    Transform transform = layerS2Ptr->transform();
+    transform.PreconcatTranslate(150, 150);
     layerS2Ptr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive 2 render passes.
         // For Root, there are 2 quads.
         // For S1, there are 2 quads.
         // For S2, there is no render pass
         ASSERT_EQ(2U, frame.renderPasses.size());
 
         EXPECT_EQ(2U, frame.renderPasses[0]->quad_list.size());
         EXPECT_EQ(2U, frame.renderPasses[1]->quad_list.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // "Re-occlude" surface S1 and repeat draw.
     // Must remove S1's render pass since it is now available in full.
     // S2 has no change so must also be removed.
     transform = layerS2Ptr->transform();
-    transform.translate(-15, -15);
+    transform.PreconcatTranslate(-15, -15);
     layerS2Ptr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Root render pass only.
         ASSERT_EQ(1U, frame.renderPasses.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
@@ skipping 237 matching lines @@
         EXPECT_EQ(DrawQuad::RENDER_PASS, frame.renderPasses[0]->quad_list[0]->material);
         const RenderPassDrawQuad* quad = RenderPassDrawQuad::MaterialCast(frame.renderPasses[0]->quad_list[0]);
         RenderPass* targetPass = frame.renderPassesById.get(quad->render_pass_id);
         EXPECT_TRUE(targetPass->damage_rect.IsEmpty());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // Change location of the intermediate layer
-    WebTransformationMatrix transform = intermediateLayerPtr->transform();
-    transform.setM41(1.0001);
+    Transform transform = intermediateLayerPtr->transform();
+    transform.matrix().setDouble(0, 3, 1.0001);
     intermediateLayerPtr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive one render pass, as the other one should be culled.
         ASSERT_EQ(1U, frame.renderPasses.size());
         EXPECT_EQ(1U, frame.renderPasses[0]->quad_list.size());
 
         EXPECT_EQ(DrawQuad::RENDER_PASS, frame.renderPasses[0]->quad_list[0]->material);
@@ skipping 139 matching lines @@
         // One of the passes should be culled as a result, since contents didn't change
         // and we have cached texture.
         ASSERT_EQ(1U, frame.renderPasses.size());
         EXPECT_EQ(1U, frame.renderPasses[0]->quad_list.size());
 
         myHostImpl->drawLayers(frame);
         myHostImpl->didDrawAllLayers(frame);
     }
 
     // Change location of the intermediate layer
-    WebTransformationMatrix transform = intermediateLayerPtr->transform();
-    transform.setM41(1.0001);
+    Transform transform = intermediateLayerPtr->transform();
+    transform.matrix().setDouble(0, 3, 1.0001);
     intermediateLayerPtr->setTransform(transform);
     {
         LayerTreeHostImpl::FrameData frame;
         EXPECT_TRUE(myHostImpl->prepareToDraw(frame));
 
         // Must receive one render pass, as the other one should be culled.
         ASSERT_EQ(1U, frame.renderPasses.size());
         EXPECT_EQ(1U, frame.renderPasses[0]->quad_list.size());
 
         EXPECT_EQ(DrawQuad::RENDER_PASS, frame.renderPasses[0]->quad_list[0]->material);
@@ skipping 73 matching lines @@
     gfx::Size m_viewportSize;
     base::hash_set<RenderPass::Id> m_textures;
 };
 
 static void configureRenderPassTestData(const char* testScript, RenderPassRemovalTestData& testData, TestRenderer* renderer)
 {
     renderer->clearCachedTextures();
 
     // One shared state for all quads - we don't need the correct details
     testData.sharedQuadState = SharedQuadState::Create();
-    testData.sharedQuadState->SetAll(WebTransformationMatrix(), gfx::Rect(), gfx::Rect(), gfx::Rect(), false, 1.0);
+    testData.sharedQuadState->SetAll(Transform(), gfx::Rect(), gfx::Rect(), gfx::Rect(), false, 1.0);
 
     const char* currentChar = testScript;
 
     // Pre-create root pass
     RenderPass::Id rootRenderPassId = RenderPass::Id(testScript[0], testScript[1]);
     scoped_ptr<TestRenderPass> pass = TestRenderPass::Create();
-    pass->SetNew(rootRenderPassId, gfx::Rect(), gfx::Rect(), WebTransformationMatrix());
+    pass->SetNew(rootRenderPassId, gfx::Rect(), gfx::Rect(), Transform());
     testData.renderPassCache.add(rootRenderPassId, pass.Pass());
     while (*currentChar) {
         int layerId = *currentChar;
         currentChar++;
         ASSERT_TRUE(currentChar);
         int index = *currentChar;
         currentChar++;
 
         RenderPass::Id renderPassId = RenderPass::Id(layerId, index);
 
@@ skipping 39 matching lines @@
                     }
                     if (*currentChar == ']')
                         currentChar++;
                 }
 
                 if (testData.renderPassCache.find(newRenderPassId) == testData.renderPassCache.end()) {
                     if (hasTexture)
                         renderer->setHaveCachedResourcesForRenderPassId(newRenderPassId);
 
                     scoped_ptr<TestRenderPass> pass = TestRenderPass::Create();
-                    pass->SetNew(newRenderPassId, gfx::Rect(), gfx::Rect(), WebTransformationMatrix());
+                    pass->SetNew(newRenderPassId, gfx::Rect(), gfx::Rect(), Transform());
                     testData.renderPassCache.add(newRenderPassId, pass.Pass());
                 }
 
                 gfx::Rect quadRect = gfx::Rect(0, 0, 1, 1);
                 gfx::Rect contentsChangedRect = contentsChanged ? quadRect : gfx::Rect();
                 scoped_ptr<RenderPassDrawQuad> quad = RenderPassDrawQuad::Create();
                 quad->SetNew(testData.sharedQuadState.get(), quadRect, newRenderPassId, isReplica, 1, contentsChangedRect, 1, 1, 0, 0);
                 renderPass->AppendQuad(quad.PassAs<DrawQuad>());
             }
         }
@@ skipping 226 matching lines @@
     m_hostImpl->setViewportSize(layoutSurfaceSize, deviceSurfaceSize);
     m_hostImpl->setPageScaleFactorAndLimits(1, 1, pageScale);
     initializeRendererAndDrawFrame();
 
     // Set new page scale on impl thread by pinching.
     m_hostImpl->pinchGestureBegin();
     m_hostImpl->pinchGestureUpdate(pageScale, gfx::Point());
     m_hostImpl->pinchGestureEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
-    WebTransformationMatrix expectedImplTransform;
-    expectedImplTransform.scale(pageScale);
+    Transform expectedImplTransform;
+    expectedImplTransform.PreconcatScale(pageScale, pageScale);
 
     // Verify the pinch zoom took place.
     EXPECT_EQ(expectedImplTransform, m_hostImpl->rootLayer()->implTransform());
 
     // The implTransform ignores the scroll if !pageScalePinchZoomEnabled,
     // so no point in continuing without it.
     if (!m_hostImpl->settings().pageScalePinchZoomEnabled)
         return;
 
     m_didRequestCommit = false;
@@ skipping 50 matching lines @@
     m_hostImpl->setViewportSize(layoutSurfaceSize, deviceSurfaceSize);
     m_hostImpl->setPageScaleFactorAndLimits(1, 1, pageScale);
     initializeRendererAndDrawFrame();
 
     // Set new page scale on impl thread by pinching.
     m_hostImpl->pinchGestureBegin();
     m_hostImpl->pinchGestureUpdate(pageScale, gfx::Point());
     m_hostImpl->pinchGestureEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
-    WebTransformationMatrix expectedImplTransform;
-    expectedImplTransform.scale(pageScale);
+    Transform expectedImplTransform;
+    expectedImplTransform.PreconcatScale(pageScale, pageScale);
 
     EXPECT_EQ(m_hostImpl->rootLayer()->implTransform(), expectedImplTransform);
 
     // The implTransform ignores the scroll if !pageScalePinchZoomEnabled,
     // so no point in continuing without it.
     if (!m_hostImpl->settings().pageScalePinchZoomEnabled)
         return;
 
     gfx::Vector2d scrollDelta(5, 0);
     gfx::Vector2d expectedMaxScroll(m_hostImpl->rootLayer()->maxScrollOffset());
     EXPECT_EQ(InputHandlerClient::ScrollStarted, m_hostImpl->scrollBegin(gfx::Point(0, 0), InputHandlerClient::Gesture));
     m_hostImpl->scrollBy(gfx::Point(), scrollDelta);
     m_hostImpl->scrollEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
     gfx::Vector2dF expectedTranslation = gfx::ScaleVector2d(scrollDelta, m_hostImpl->deviceScaleFactor());
-    expectedImplTransform.translate(-expectedTranslation.x(), -expectedTranslation.y());
+    expectedImplTransform.PreconcatTranslate(-expectedTranslation.x(), -expectedTranslation.y());
 
     EXPECT_EQ(expectedImplTransform, m_hostImpl->rootLayer()->implTransform());
     // No change expected.
     EXPECT_EQ(expectedMaxScroll, m_hostImpl->rootLayer()->maxScrollOffset());
     // None of the scroll delta should have been used for document scroll.
     scoped_ptr<ScrollAndScaleSet> scrollInfo = m_hostImpl->processScrollDeltas();
     expectNone(*scrollInfo.get(), m_hostImpl->rootLayer()->id());
 
     // Test scroll in y-direction also.
     scrollDelta = gfx::Vector2d(0, 5);
     EXPECT_EQ(InputHandlerClient::ScrollStarted, m_hostImpl->scrollBegin(gfx::Point(0, 0), InputHandlerClient::Gesture));
     m_hostImpl->scrollBy(gfx::Point(), scrollDelta);
     m_hostImpl->scrollEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
     expectedTranslation = gfx::ScaleVector2d(scrollDelta, m_hostImpl->deviceScaleFactor());
-    expectedImplTransform.translate(-expectedTranslation.x(), -expectedTranslation.y());
+    expectedImplTransform.PreconcatTranslate(-expectedTranslation.x(), -expectedTranslation.y());
 
     EXPECT_EQ(expectedImplTransform, m_hostImpl->rootLayer()->implTransform());
     // No change expected.
     EXPECT_EQ(expectedMaxScroll, m_hostImpl->rootLayer()->maxScrollOffset());
     // None of the scroll delta should have been used for document scroll.
     scrollInfo = m_hostImpl->processScrollDeltas();
     expectNone(*scrollInfo.get(), m_hostImpl->rootLayer()->id());
 }
 
 TEST_P(LayerTreeHostImplTest, pinchZoomPanViewportWithDeviceScaleFactor1)
@@ skipping 24 matching lines @@
     m_hostImpl->setViewportSize(layoutSurfaceSize, deviceSurfaceSize);
     m_hostImpl->setPageScaleFactorAndLimits(1, 1, pageScale);
     initializeRendererAndDrawFrame();
 
     // Set new page scale on impl thread by pinching.
     m_hostImpl->pinchGestureBegin();
     m_hostImpl->pinchGestureUpdate(pageScale, gfx::Point());
     m_hostImpl->pinchGestureEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
-    WebTransformationMatrix expectedImplTransform;
-    expectedImplTransform.scale(pageScale);
+    Transform expectedImplTransform;
+    expectedImplTransform.PreconcatScale(pageScale, pageScale);
 
     EXPECT_EQ(expectedImplTransform, m_hostImpl->rootLayer()->implTransform());
 
     // The implTransform ignores the scroll if !pageScalePinchZoomEnabled,
     // so no point in continuing without it.
     if (!m_hostImpl->settings().pageScalePinchZoomEnabled)
         return;
 
     // Scroll document only: scrollDelta chosen to move document horizontally
     // to its max scroll offset.
@@ skipping 15 matching lines @@
 
     // Further scrolling should move the pinchZoomViewport only.
     scrollDelta = gfx::Vector2d(2, 0);
     EXPECT_EQ(InputHandlerClient::ScrollStarted, m_hostImpl->scrollBegin(gfx::Point(0, 0), InputHandlerClient::Gesture));
     m_hostImpl->scrollBy(gfx::Point(), scrollDelta);
     m_hostImpl->scrollEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
     gfx::Vector2d expectedPanDelta(scrollDelta);
     gfx::Vector2dF expectedTranslation = gfx::ScaleVector2d(expectedPanDelta, m_hostImpl->deviceScaleFactor());
-    expectedImplTransform.translate(-expectedTranslation.x(), -expectedTranslation.y());
+    expectedImplTransform.PreconcatTranslate(-expectedTranslation.x(), -expectedTranslation.y());
 
     EXPECT_EQ(m_hostImpl->rootLayer()->implTransform(), expectedImplTransform);
 
     // The scroll delta on the main thread should not have been affected by this.
     scrollInfo = m_hostImpl->processScrollDeltas();
     expectContains(*scrollInfo.get(), m_hostImpl->rootLayer()->id(), expectedScrollDelta);
     EXPECT_EQ(expectedMaxScroll, m_hostImpl->rootLayer()->maxScrollOffset());
 
     // Perform same test sequence in y-direction also.
     // Document only scroll.
@@ skipping 14 matching lines @@
 
     // pinchZoomViewport scroll only.
     scrollDelta = gfx::Vector2d(0, 1);
     EXPECT_EQ(InputHandlerClient::ScrollStarted, m_hostImpl->scrollBegin(gfx::Point(0, 0), InputHandlerClient::Gesture));
     m_hostImpl->scrollBy(gfx::Point(), scrollDelta);
     m_hostImpl->scrollEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
     expectedPanDelta = scrollDelta;
     expectedTranslation = gfx::ScaleVector2d(expectedPanDelta, m_hostImpl->deviceScaleFactor());
-    expectedImplTransform.translate(-expectedTranslation.x(), -expectedTranslation.y());
+    expectedImplTransform.PreconcatTranslate(-expectedTranslation.x(), -expectedTranslation.y());
 
     EXPECT_EQ(expectedImplTransform, m_hostImpl->rootLayer()->implTransform());
 
     // The scroll delta on the main thread should not have been affected by this.
     scrollInfo = m_hostImpl->processScrollDeltas();
     expectContains(*scrollInfo.get(), m_hostImpl->rootLayer()->id(), expectedScrollDelta);
     EXPECT_EQ(expectedMaxScroll, m_hostImpl->rootLayer()->maxScrollOffset());
 }
 
 TEST_P(LayerTreeHostImplTest, pinchZoomPanViewportAndScrollWithDeviceScaleFactor)
@@ skipping 26 matching lines @@
     m_hostImpl->setViewportSize(layoutSurfaceSize, deviceSurfaceSize);
     m_hostImpl->setPageScaleFactorAndLimits(1, 1, pageScale);
     initializeRendererAndDrawFrame();
 
     // Set new page scale on impl thread by pinching.
     m_hostImpl->pinchGestureBegin();
     m_hostImpl->pinchGestureUpdate(pageScale, gfx::Point());
     m_hostImpl->pinchGestureEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
-    WebTransformationMatrix expectedImplTransform;
-    expectedImplTransform.scale(pageScale);
+    Transform expectedImplTransform;
+    expectedImplTransform.PreconcatScale(pageScale, pageScale);
 
     EXPECT_EQ(expectedImplTransform, m_hostImpl->rootLayer()->implTransform());
 
     // The implTransform ignores the scroll if !pageScalePinchZoomEnabled,
     // so no point in continuing without it.
     if (!m_hostImpl->settings().pageScalePinchZoomEnabled)
         return;
 
     // Scroll document and pann zoomViewport in one scroll-delta.
     gfx::Vector2d scrollDelta(5, 0);
     gfx::Vector2d expectedScrollDelta(gfx::Vector2d(3, 0)); // This component gets handled by document scroll.
     gfx::Vector2d expectedMaxScroll(m_hostImpl->rootLayer()->maxScrollOffset());
 
     EXPECT_EQ(InputHandlerClient::ScrollStarted, m_hostImpl->scrollBegin(gfx::Point(0, 0), InputHandlerClient::Gesture));
     m_hostImpl->scrollBy(gfx::Point(), scrollDelta);
     m_hostImpl->scrollEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
     // The scroll delta is not scaled because the main thread did not scale.
     scoped_ptr<ScrollAndScaleSet> scrollInfo = m_hostImpl->processScrollDeltas();
     expectContains(*scrollInfo.get(), m_hostImpl->rootLayer()->id(), expectedScrollDelta);
     EXPECT_EQ(expectedMaxScroll, m_hostImpl->rootLayer()->maxScrollOffset());
 
     gfx::Vector2d expectedPanDelta(2, 0); // This component gets handled by zoomViewport pan.
     gfx::Vector2dF expectedTranslation = gfx::ScaleVector2d(expectedPanDelta, m_hostImpl->deviceScaleFactor());
-    expectedImplTransform.translate(-expectedTranslation.x(), -expectedTranslation.y());
+    expectedImplTransform.PreconcatTranslate(-expectedTranslation.x(), -expectedTranslation.y());
 
     EXPECT_EQ(m_hostImpl->rootLayer()->implTransform(), expectedImplTransform);
 
     // Perform same test sequence in y-direction also.
     scrollDelta = gfx::Vector2d(0, 5);
     expectedScrollDelta += gfx::Vector2d(0, 4); // This component gets handled by document scroll.
     EXPECT_EQ(InputHandlerClient::ScrollStarted, m_hostImpl->scrollBegin(gfx::Point(0, 0), InputHandlerClient::Gesture));
     m_hostImpl->scrollBy(gfx::Point(), scrollDelta);
     m_hostImpl->scrollEnd();
     m_hostImpl->updateRootScrollLayerImplTransform();
 
     // The scroll delta is not scaled because the main thread did not scale.
     scrollInfo = m_hostImpl->processScrollDeltas(); // This component gets handled by zoomViewport pan.
     expectContains(*scrollInfo.get(), m_hostImpl->rootLayer()->id(), expectedScrollDelta);
     EXPECT_EQ(expectedMaxScroll, m_hostImpl->rootLayer()->maxScrollOffset());
 
     expectedPanDelta = gfx::Vector2d(0, 1);
     expectedTranslation = gfx::ScaleVector2d(expectedPanDelta, m_hostImpl->deviceScaleFactor());
-    expectedImplTransform.translate(-expectedTranslation.x(), -expectedTranslation.y());
+    expectedImplTransform.PreconcatTranslate(-expectedTranslation.x(), -expectedTranslation.y());
 
     EXPECT_EQ(expectedImplTransform, m_hostImpl->rootLayer()->implTransform());
 }
 
 TEST_P(LayerTreeHostImplTest, pinchZoomPanViewportAndScrollBoundaryWithDeviceScaleFactor)
 {
     pinchZoomPanViewportAndScrollBoundaryTest(1);
 }
 
 TEST_P(LayerTreeHostImplTest, pinchZoomPanViewportAndScrollBoundaryWithDeviceScaleFactor2)
 {
     pinchZoomPanViewportAndScrollBoundaryTest(2);
 }
 
 INSTANTIATE_TEST_CASE_P(LayerTreeHostImplTests,
                         LayerTreeHostImplTest,
                         ::testing::Values(false, true));
 
 }  // namespace
 }  // namespace cc