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This is a reland of d2506f13
Original change's description:
> Improve suspending logic.
> 
> When loading takes too long, we can suspend the codec before
> we have a chance to load the first frame. This is all normal,
> but should only happen when we are waiting on the network.
> This CL makes sure that we have additional progress callbacks
> expected before suspending.
> 
> Bug: 728468
> Change-Id: I815520e0ba832617b04948f7fbefb88498cf79b7
> Reviewed-on: https://chromium-review.googlesource.com/614360
> Reviewed-by: Dan Sanders <sandersd@chromium.org>
> Commit-Queue: Fredrik Hubinette <hubbe@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#494212}

Bug: 728468
Change-Id: Ide175e6e5c8d2ecaeeb81b0055352f66c917d099
Reviewed-on: https://chromium-review.googlesource.com/627616Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Fredrik Hubinette <hubbe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#496513}