V8 can be smarter about the memory it uses and the frequency of garbage collection but we need to inform it of the values to use. As this varies device to device look it up and store it on the WebViewCore to be read by native code over JNI. See also https://android-git.corp.google.com/g/#change,78691 Bug: 3075565 Change-Id: Ib52f4df775b80b386fc98f1d71b5687f01c12b2e