Host-side implementation of ARC Intent handler

components/arc/common/intent.mojom

Index: components/arc/common/intent.mojom
diff --git a/components/arc/common/video.mojom b/components/arc/common/intent.mojom
similarity index 53%
copy from components/arc/common/video.mojom
copy to components/arc/common/intent.mojom
index b21a1dbc4a62a3951bcf45f2441c67f1adde745b..d8ae21e208b0d01351e6f9fa2f5065d08c9ea0c7 100644
--- a/components/arc/common/video.mojom
+++ b/components/arc/common/intent.mojom
@@ -4,12 +4,11 @@
 
 module arc;
 
-interface VideoHost {
-  // Notifies Chrome a request for ipc channel of video acceleration.
-  OnRequestArcVideoAcceleratorChannel() => (handle channel_handle);
+interface IntentHelperHost {

[Luis Héctor Chávez, 2016/01/15 17:26:47]

Also document the purpose of this interface.

Now that I think of it, the Settings interface just sends broadcast intents that
are listened by ArcSettings package.

Given that it makes more sense for the IntentHelper to also handle broadcast
intents, can you sync up with benhansen@ to see if it is possible to drop the
settings interface and have the IntentHelperInstance also handle broadcasting
intents?

[Yusuke Sato, 2016/01/16 00:11:07]

Done.
 
Chatted with Ben and we agreed to merge settings.mojom into mine. Let me do that
in a separate CL (I'm going to work on that right after this CL.) For now, added
a TODO.

Ben also told me that LaunchApp() in app.mojom might be a candidate to move to
intent.mojo, but the interface can probably stay in app.mojom because LaunchApp
does not send intent/broadcast at all. It just issues a binder call to our home
screen app.

+  OnOpenUrl@0(string url);

[hidehiko, 2016/01/15 09:04:55]

Could you document what this does?

[Yusuke Sato, 2016/01/16 00:11:07]

Done.

 };
 
-interface VideoInstance {
+interface IntentHelperInstance {
   // Establishes full-duplex communication with the host.
-  Init(VideoHost host_ptr);
+  Init@0(IntentHelperHost host_ptr);
 };