Eric Hassold ef7be262e5 Detect out of memory in extractAlpha
When extractAlpha() native method in Skia fails to allocate pixels,
it resets target bitmap. This change detects when such empty bitmap
is returned, and throws a OutOfMemory Java exception.

Depends on https://android-git.corp.google.com/g/97793

Bug: 3418381
Change-Id: I65a84998be089c49ed5005f6995bdc4f4d1669bc
2011-02-24 11:21:13 -08:00
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