Merge "Bump x86 WebView zygote reservation size to 190MiB"

     */

    static void reserveAddressSpaceInZygote() {

        System.loadLibrary("webviewchromium_loader");

        boolean is64Bit = VMRuntime.getRuntime().is64Bit();

        long addressSpaceToReserve;

        if (VMRuntime.getRuntime().is64Bit()) {

            // On 64-bit address space is really cheap and we can reserve 1GB which is plenty.

        // On 32-bit it's fairly scarce and we should keep it to a realistic number that

        // permits some future growth but doesn't hog space: we use 130MB which is roughly

        // what was calculated on older OS versions in practice.

        long addressSpaceToReserve = is64Bit ? 1 * 1024 * 1024 * 1024 : 130 * 1024 * 1024;

            addressSpaceToReserve = 1 * 1024 * 1024 * 1024;

        } else if (VMRuntime.getRuntime().vmInstructionSet().equals("arm")) {

            // On 32-bit the address space is fairly scarce, hence we should keep it to a realistic

            // number that permits some future growth but doesn't hog space. For ARM we use 130MB

            // which is roughly what was calculated on older OS versions. The size has been

            // growing gradually, but a few efforts have offset it back to the size close to the

            // original.

            addressSpaceToReserve = 130 * 1024 * 1024;

        } else {

            // The number below was obtained for a binary used for x86 emulators, allowing some

            // natural growth.

            addressSpaceToReserve = 190 * 1024 * 1024;

        }

        sAddressSpaceReserved = nativeReserveAddressSpace(addressSpaceToReserve);

        if (sAddressSpaceReserved) {