media: Add ProvisionFetcher mojo interface and implementation.

media/mojo/services/mojo_media_client.cc

Index: media/mojo/services/mojo_media_client.cc
diff --git a/media/mojo/services/mojo_media_client.cc b/media/mojo/services/mojo_media_client.cc
index 7501b5dc884a89aefb3acb7adeef1f3047144b74..b90dcf85c95e462f83b509eb10c856251297b442 100644
--- a/media/mojo/services/mojo_media_client.cc
+++ b/media/mojo/services/mojo_media_client.cc
@@ -41,7 +41,8 @@ const AudioHardwareConfig* PlatformMojoMediaClient::GetAudioHardwareConfig() {
   return nullptr;
 }
 
-scoped_ptr<CdmFactory> PlatformMojoMediaClient::CreateCdmFactory() {
+scoped_ptr<CdmFactory> PlatformMojoMediaClient::CreateCdmFactory(
+    mojo::ServiceProvider* service_provider) {
   return nullptr;
 }
 
@@ -87,8 +88,9 @@ const AudioHardwareConfig* MojoMediaClient::GetAudioHardwareConfig() {
   return mojo_media_client_->GetAudioHardwareConfig();
 }
 
-scoped_ptr<CdmFactory> MojoMediaClient::CreateCdmFactory() {
-  return mojo_media_client_->CreateCdmFactory();
+scoped_ptr<CdmFactory> MojoMediaClient::CreateCdmFactory(
+    mojo::ServiceProvider* service_provider) {
+  return mojo_media_client_->CreateCdmFactory(service_provider);
 }
 
 MojoMediaClient::MojoMediaClient()