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Android Studio has split into channels, stable (3.0), beta (3.1) and
canary (3.2) with corresponding packages. We should support all three.

Bug: 620034
Change-Id: If8ebc37c137d53c5811aa8ce9258ac0dcef3d470
Reviewed-on: https://chromium-review.googlesource.com/974101Reviewed-by: agrieve <agrieve@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#545062}