media: Add ProvisionFetcher mojo interface and implementation.

media/mojo/services/android_mojo_media_client.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/mojo/services/mojo_media_client.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "media/base/android/android_cdm_factory.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/base/media.h"
+#include "media/mojo/interfaces/provision_fetcher.mojom.h"
+#include "media/mojo/services/mojo_provision_fetcher.h"
+#include "mojo/application/public/cpp/connect.h"
 
 namespace media {
 namespace internal {
+
 namespace {
 
-// A temporary solution until we pass the proper CDM provision fetcher.
-class DummyProvisionFetcher : public ProvisionFetcher {
- public:
-  DummyProvisionFetcher() {}
-  ~DummyProvisionFetcher() final {}
-
-  // Retrieve() always fails for this fetcher.
-  void Retrieve(const std::string& default_url,
-                const std::string& request_data,
-                const ResponseCB& response_cb) final {
-    BindToCurrentLoop(response_cb).Run(false, "");
-  };
-};
-
-scoped_ptr<ProvisionFetcher> CreateDummyProvisionFetcher() {
-  return make_scoped_ptr(new DummyProvisionFetcher());
+scoped_ptr<ProvisionFetcher> CreateProvisionFetcher(
+    mojo::ServiceProvider* service_provider) {
+  interfaces::ProvisionFetcherPtr provision_fetcher_ptr;
+  mojo::ConnectToService(service_provider, &provision_fetcher_ptr);
+  return make_scoped_ptr(
+      new MojoProvisionFetcher(provision_fetcher_ptr.Pass()));
 }
 
 }  // namespace (anonymous)
 
 class AndroidMojoMediaClient : public PlatformMojoMediaClient {
  public:
   AndroidMojoMediaClient() {}
 
-  scoped_ptr<CdmFactory> CreateCdmFactory() override {
-    return make_scoped_ptr(
-        new AndroidCdmFactory(base::Bind(&CreateDummyProvisionFetcher)));
+  scoped_ptr<CdmFactory> CreateCdmFactory(
+      mojo::ServiceProvider* service_provider) override {
+    return make_scoped_ptr(new AndroidCdmFactory(
+        base::Bind(&CreateProvisionFetcher, service_provider)));

[xhwang, 2015/11/20 22:28:34]

timav: Now when we create a MediaDrmBridge, we'll automatically create the
Fetcher, which will connect to the mojo service, and create a
UrlProvisionFetcher in the browser process. Since we don't really need
provisioning service all the time, maybe we should only create the Fetcher when
we need it. I'll address this in a separate CL.

   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AndroidMojoMediaClient);
 };
 
 scoped_ptr<PlatformMojoMediaClient> CreatePlatformMojoMediaClient() {
   return make_scoped_ptr(new AndroidMojoMediaClient());
 }
 
 }  // namespace internal
 }  // namespace media