CVE-2019-1987

In onSetSampleX of SkSwizzler.cpp, there is a possible out of bounds write
due to a missing bounds check. This could lead to remote code execution
with no additional execution privileges needed. User interaction is needed
for exploitation. Product: Android. Versions: Android-7.0 Android-7.1.1
Android-7.1.2 Android-8.0 Android-8.1 Android-9. Android ID: A-118143775.