Bug 1027763, part 1 - Rename DrawTarget::GetType() to DrawTarget::GetBackendType() in Moz2D code. r=Bas
Bug 1027763, part 2 - Make non-Moz2D callers of DrawTarget::GetType() call DrawTarget::GetBackendType() instead. r=Bas
Bug 1027763, part 3 - Remove the old DrawTarget::GetType() method. r=Bas