Bug 1065718 - Make gfxMatrix's Translate(), Scale() and Rotate() methods return a non-const reference. r=Bas
Bug 1065737 - Add a PreMultiply() method to Moz2D's Matrix class. r=Bas
Bug 1065743 - Make Moz2D's DrawTarget::GetTransform() return a copy instead of a const reference. r=Bas
Bug 1065764, part 1 - Make gfxMatrix::NudgeToIntegers() return a reference. r=Bas
Bug 1065764, part 2 - Make Moz2D's Matrix::NudgeToIntegers() return a reference. r=Bas