Pass Connector* into MojoMediaClient::Initialize().

media/mojo/services/android_mojo_media_client.cc

Index: media/mojo/services/android_mojo_media_client.cc
diff --git a/media/mojo/services/android_mojo_media_client.cc b/media/mojo/services/android_mojo_media_client.cc
index 318429904300bf8c6c3cf29aaf98cfaef1d4ad76..d0dd421a3270de53d55a45ac207a7d1cdb2c5e6e 100644
--- a/media/mojo/services/android_mojo_media_client.cc
+++ b/media/mojo/services/android_mojo_media_client.cc
@@ -40,6 +40,7 @@ std::unique_ptr<AudioDecoder> AndroidMojoMediaClient::CreateAudioDecoder(
 
 std::unique_ptr<CdmFactory> AndroidMojoMediaClient::CreateCdmFactory(
     service_manager::mojom::InterfaceProvider* interface_provider) {
+  DCHECK(interface_provider) << "InterfaceProvider is not bound!";

[xhwang, 2016/11/30 18:52:50]

Given how flexible people can use mojo media, I imagine it's possible that
someone can use AndroidMojoMediaClient in a frame-less context, where this
DCEHCK will fire.

Can we actually do a if check here, and return nullptr if the interface_provider
is null?

[slan, 2016/12/01 00:47:22]

To be honest, if I were a user of this interface, I would not expect that
behavior. But I will defer to your judgment. Done.

   return base::MakeUnique<AndroidCdmFactory>(
       base::Bind(&CreateProvisionFetcher, interface_provider));
 }