Add check for Java VM in Android's SysInfo::IsLowEndDevice()
Add check for Java VM in Android's SysInfo::IsLowEndDevice()

Android's SysInfo::IsLowEndDevice() calls into Java SysUtils
and thus expects to have a Java VM setup. However when using
command buffer as a standalone library VM doesn't exist.

BUG=skia:2992

Review URL: https://codereview.chromium.org/1769503002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#386343}

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