media: Support creation and SetCdm() for mojo based CDM.

media/mojo/services/mojo_renderer_service.cc

Index: media/mojo/services/mojo_renderer_service.cc
diff --git a/media/mojo/services/mojo_renderer_service.cc b/media/mojo/services/mojo_renderer_service.cc
index 562ae1890ecb8e7faee809d2f75768eb5432ea39..6c14f7fec31004d65acbbee9be7c91e5db5127e3 100644
--- a/media/mojo/services/mojo_renderer_service.cc
+++ b/media/mojo/services/mojo_renderer_service.cc
@@ -18,6 +18,7 @@
 #include "media/filters/renderer_impl.h"
 #include "media/filters/video_renderer_impl.h"
 #include "media/mojo/services/demuxer_stream_provider_shim.h"
+#include "media/mojo/services/mojo_cdm_service_context.h"
 #include "media/mojo/services/mojo_demuxer_stream_adapter.h"
 #include "media/mojo/services/renderer_config.h"
 
@@ -34,8 +35,10 @@ static void LogMediaSourceError(const scoped_refptr<MediaLog>& media_log,
 static void PaintNothing(const scoped_refptr<VideoFrame>& frame) {
 }
 
-MojoRendererService::MojoRendererService()
-    : state_(STATE_UNINITIALIZED),
+MojoRendererService::MojoRendererService(
+    MojoCdmServiceContext* cdm_service_context)
+    : cdm_service_context_(cdm_service_context),
+      state_(STATE_UNINITIALIZED),
       last_media_time_usec_(0),
       weak_factory_(this) {
   weak_this_ = weak_factory_.GetWeakPtr();
@@ -110,6 +113,19 @@ void MojoRendererService::SetVolume(float volume) {
   renderer_->SetVolume(volume);
 }
 
+void MojoRendererService::SetCdm(int32_t cdm_id,
+                                 const mojo::Callback<void(bool)>& callback) {
+  CdmContext* cdm_context = cdm_service_context_->GetCdmContext(cdm_id);
+  if (!cdm_context) {
+    DVLOG(1) << __FUNCTION__ << ": No CDM for " << cdm_id << " found.";
+    callback.Run(false);
+    return;
+  }
+
+  renderer_->SetCdm(cdm_context, base::Bind(&MojoRendererService::OnCdmAttached,
+                                            weak_this_, callback));
+}
+
 void MojoRendererService::OnStreamReady(const mojo::Closure& callback) {
   DCHECK_EQ(state_, STATE_INITIALIZING);
 
@@ -189,4 +205,11 @@ void MojoRendererService::OnFlushCompleted(const mojo::Closure& callback) {
   callback.Run();
 }
 
+void MojoRendererService::OnCdmAttached(
+    const mojo::Callback<void(bool)>& callback,
+    bool success) {
+  DVLOG(1) << __FUNCTION__;
+  callback.Run(success);
+}
+
 }  // namespace media