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Surface caching is currently broken if any layers in the surface do not
draw themselves fully within the bounds of the surface for any reason
other than being occluded. This includes:
1) Being at non-ideal scale.
2) Being checkerboarded.
3) Missing a texture resource.
4) Having visibleContentRect clipped by something outside the surface.

This disables the feature entirely.

R=jamesr,vangelis
BUG=170713
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/12210077

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182136 0039d316-1c4b-4281-b951-d872f2087c98