Hook up RendererMediaSessionManager with browser side

content/renderer/media/android/webmediasession_android.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 "content/renderer/media/android/webmediasession_android.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/renderer/media/android/renderer_media_session_manager.h"
 
 namespace content {
 
 WebMediaSessionAndroid::WebMediaSessionAndroid(
     RendererMediaSessionManager* session_manager)
-    : session_manager_(session_manager) {
+    : session_manager_(session_manager), next_action_id_(0) {
   DCHECK(session_manager_);
   session_id_ = session_manager_->RegisterMediaSession(this);
 }
 
 WebMediaSessionAndroid::~WebMediaSessionAndroid() {
   session_manager_->UnregisterMediaSession(session_id_);
 }
 
 void WebMediaSessionAndroid::activate(
     blink::WebMediaSessionActivateCallback* raw_callback) {
-  NOTIMPLEMENTED();
+  int action_id = next_action_id_++;

[mlamouri (slow - plz ping), 2015/11/30 12:38:20]

What the |action_id| is? Should that be a request_id? passed trough the IPC
messages?

[davve, 2015/11/30 14:19:48]

Yes. Passed through to map OnDidActivate to the corresponding activate. I like
the name request_id.

+  actions_[action_id].activate = raw_callback;
 
-  scoped_ptr<blink::WebMediaSessionActivateCallback> callback(raw_callback);
-  callback->onError(blink::WebMediaSessionError::Activate);
+  session_manager_->Activate(session_id_, action_id);
 }
 
 void WebMediaSessionAndroid::deactivate(
     blink::WebMediaSessionDeactivateCallback* raw_callback) {
-  NOTIMPLEMENTED();
+  int action_id = next_action_id_++;
+  actions_[action_id].deactivate = raw_callback;
+  session_manager_->Deactivate(session_id_, action_id);
+}
 
-  scoped_ptr<blink::WebMediaSessionDeactivateCallback> callback(raw_callback);
-  callback->onSuccess();
+void WebMediaSessionAndroid::OnDidActivate(int action_id, bool success) {
+  auto iter = actions_.find(action_id);
+  if (iter != actions_.end()) {
+    if (success)
+      iter->second.activate->onSuccess();
+    else
+      iter->second.activate->onError(
+          blink::WebMediaSessionError(blink::WebMediaSessionError::Activate));
+    delete iter->second.activate;
+    actions_.erase(iter);
+  }
+}
+
+void WebMediaSessionAndroid::OnDidDeactivate(int action_id) {
+  auto iter = actions_.find(action_id);
+  if (iter != actions_.end()) {
+    iter->second.deactivate->onSuccess();
+    delete iter->second.deactivate;
+    actions_.erase(iter);
+  }
 }
 
 }  // namespace content