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

cc/layer_tree_host.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.h"
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop.h"
 #include "cc/font_atlas.h"
@@ skipping 716 matching lines @@
         else
             layer->setScrollOffset(layer->scrollOffset() + info.scrolls[i].scrollDelta);
     }
     if (!rootScrollDelta.IsZero() || info.pageScaleDelta != 1)
         m_client->applyScrollAndScale(rootScrollDelta, info.pageScaleDelta);
 }
 
 gfx::PointF LayerTreeHost::adjustEventPointForPinchZoom(const gfx::PointF& point)
     const
 {
-    WebKit::WebTransformationMatrix inverseImplTransform = m_implTransform;
+    gfx::Transform inverseImplTransform = m_implTransform;
     // TODO(wjmaclean) Need to determine why the next two lines are
     // necessary for this to work ... it seems like just inverting
     // m_implTransform should be sufficient.
-    DCHECK(inverseImplTransform.m11());
-    DCHECK(inverseImplTransform.m22());
-    inverseImplTransform.setM41(inverseImplTransform.m41()
-        / inverseImplTransform.m11());
-    inverseImplTransform.setM42(inverseImplTransform.m42()
-        / inverseImplTransform.m22());
-    inverseImplTransform = inverseImplTransform.inverse();
+    DCHECK(inverseImplTransform.matrix().getDouble(0, 0));
+    DCHECK(inverseImplTransform.matrix().getDouble(1, 1));
+    inverseImplTransform.matrix().setDouble(0, 3, inverseImplTransform.matrix().getDouble(0, 3)
+        / inverseImplTransform.matrix().getDouble(0, 0));
+    inverseImplTransform.matrix().setDouble(1, 3, inverseImplTransform.matrix().getDouble(1, 3)
+        / inverseImplTransform.matrix().getDouble(1, 1));
+    inverseImplTransform = MathUtil::inverse(inverseImplTransform);
     bool wasClipped = false;
     gfx::PointF adjustedPoint = MathUtil::projectPoint(inverseImplTransform, point, wasClipped);
     DCHECK(!wasClipped);
 
     return adjustedPoint;
 }
 
-void LayerTreeHost::setImplTransform(const WebKit::WebTransformationMatrix& transform)
+void LayerTreeHost::setImplTransform(const gfx::Transform& transform)
 {
     m_implTransform = transform;
 }
 
 void LayerTreeHost::startRateLimiter(WebKit::WebGraphicsContext3D* context)
 {
     if (m_animating)
         return;
 
     DCHECK(context);
@@ skipping 89 matching lines @@
             else
                 layer->notifyAnimationFinished(wallClockTime.ToDoubleT());
         }
     }
 
     for (size_t childIndex = 0; childIndex < layer->children().size(); ++childIndex)
         setAnimationEventsRecursive(events, layer->children()[childIndex].get(), wallClockTime);
 }
 
 }  // namespace cc