Handle recording a bitmap if copy fails.

If SkBitmapHeap::insert() returns INVALID_SLOT, assert at picture
record time so we can debug, but allow it to continue in release
mode, so that we can still capture a picture. At playback time,
print a message so we know that there was an error.

Review URL: https://codereview.appspot.com/6873050

git-svn-id: http://skia.googlecode.com/svn/trunk@6664 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed