SkyDemo should use explicit intents

SkyDemo should use explicit intents

This CL switches SkyDemo over to using explicit intents for deciding which Sky
apps to run. This change lets us get rid of the hacky "sky" URI scheme.
Instead, we use normal URLs but we require the sender of the intent to be
explicit in directing the VIEW intent to us.

TBR=eseidel@google.com

Committed: https://chromium.googlesource.com/external/mojo/+/cdc727561c5fcd9cbf9c962ac3c19dfb1c23cc51

[abarth-chromium, 2015-07-02 22:41:50]

Committed patchset #1 (id:1) manually as
cdc727561c5fcd9cbf9c962ac3c19dfb1c23cc51 (presubmit successful).

[eseidel, 2015-07-06 15:56:54]

eseidel@chromium.org changed reviewers:
+ eseidel@chromium.org

[eseidel, 2015-07-06 15:56:55]

I'm not sure i fully understand the goal here.  I guess this makes sense from a
single-viewer perspective.  It removes ease of linkability since the browser
already squats on http*.

[abarth-chromium, 2015-07-06 16:01:09]

On 2015/07/06 at 15:56:55, eseidel wrote:
> I'm not sure i fully understand the goal here.  I guess this makes sense from
a single-viewer perspective.  It removes ease of linkability since the browser
already squats on http*.

If we're going to make lots of APKs, one for each app, it doesn't make sense for
all of them to try to grab the "sky" scheme.  Instead, each one should grab the
"https://foo.com" URL that's appropriate for their specific app.

The idea behind this CL specifically is to make SkyDemo.apk focused on being an
demo of various Sky apps and not have it try to be the universal runner.

[eseidel, 2015-07-06 16:03:23]

OK.