Initial implementation of GeometryMapper

third_party/WebKit/Source/platform/transforms/TransformationMatrix.h

Index: third_party/WebKit/Source/platform/transforms/TransformationMatrix.h
diff --git a/third_party/WebKit/Source/platform/transforms/TransformationMatrix.h b/third_party/WebKit/Source/platform/transforms/TransformationMatrix.h
index 14fdd36aa4b08541aabbf9513061c2fdc70f57d4..8716d2eaacd6bd9409b1a62ecbbff290c239cf60 100644
--- a/third_party/WebKit/Source/platform/transforms/TransformationMatrix.h
+++ b/third_party/WebKit/Source/platform/transforms/TransformationMatrix.h
@@ -271,6 +271,7 @@ public:
     TransformationMatrix& scale3d(double sx, double sy, double sz);
 
     TransformationMatrix& rotate(double d) { return rotate3d(0, 0, d); }
+    // Angles are in degrees.
     TransformationMatrix& rotate3d(double rx, double ry, double rz);
     TransformationMatrix& rotate3d(const Rotation&);