setDeviceScaleFactor  356 Source/core/page/Page.cpp void Page::setDeviceScaleFactor(float scaleFactor)
setDeviceScaleFactor 2015 Source/core/testing/Internals.cpp void Internals::setDeviceScaleFactor(float scaleFactor, ExceptionState& exceptionState)
setDeviceScaleFactor 2693 Source/web/WebViewImpl.cpp void WebViewImpl::setDeviceScaleFactor(float scaleFactor)