Revert "Add RemotingAppLauncher and DefaultRemotingApp"

This reverts commit 43dcbdf.

Reason for revert: 902871

Original change's description:
> Add RemotingAppLauncher and DefaultRemotingApp
> 
> The RemotingAppLauncher instantiates RemotingApps at runtime. It uses
> the app manifest to find class names of RemotingApps, and loads them via
> reflection.
> 
> The DefaultRemotingApp is a simple wrapper around the default media
> receiver application.
> 
> Bug: 790766
> Change-Id: I01f51ebe90de361b947d67fe904a2faddc35f5de
> Reviewed-on: https://chromium-review.googlesource.com/c/1306778
> Reviewed-by: Zhiqiang Zhang <zqzhang@chromium.org>
> Reviewed-by: David Trainor <dtrainor@chromium.org>
> Commit-Queue: Thomas Guilbert <tguilbert@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#605389}

TBR=dtrainor@chromium.org,zqzhang@chromium.org,tguilbert@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 790766
Change-Id: I3995a570a71923053711bb1ea491f9d24521fdea
Reviewed-on: https://chromium-review.googlesource.com/c/1324194
Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>
Commit-Queue: Thomas Guilbert <tguilbert@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606160}

chrome/android/java/AndroidManifest.xml

@@ -1165,8 +1165,6 @@ android:value="true" />
              controllers with its own list. -->
         <meta-data android:name="org.chromium.content.browser.REMOTE_MEDIA_PLAYERS"
             android:value="org.chromium.chrome.browser.media.remote.DefaultMediaRouteController"/>
-        <meta-data android:name="org.chromium.content.browser.REMOTE_PLAYBACK_APPS"
-            android:value="org.chromium.chrome.browser.media.router.cast.remoting.DefaultRemotingApp"/>
 
         {% endblock %}
     </application>

chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/CreateRouteRequest.java

@@ -175,12 +175,11 @@ public void onConnected(Bundle connectionHint) {
         if (mState == State.API_CONNECTION_SUSPENDED) return;
 
         try {
-            launchApplication(mApiClient, mSource.getApplicationId(), true).setResultCallback(this);
+            launchApplication(mApiClient, mSource.getApplicationId(), true)
+                    .setResultCallback(this);
             mState = State.LAUNCHING_APPLICATION;
         } catch (Exception e) {
-            // Do not log appId, as it can contain appIds overriden in downstream code that must not
-            // be leaked
-            Log.e(TAG, "Launch application failed", e);
+            Log.e(TAG, "Launch application failed: %s", mSource.getApplicationId(), e);
             reportError();
         }
     }
@@ -210,10 +209,8 @@ public void onResult(Cast.ApplicationConnectionResult result) {
 
         Status status = result.getStatus();
         if (!status.isSuccess()) {
-            // Do not log appId, as it can contain appIds overriden in downstream code that must not
-            // be leaked
-            Log.e(TAG, "Launch application failed with status: %d, %s", status.getStatusCode(),
-                    status.getStatusMessage());
+            Log.e(TAG, "Launch application failed with status: %s, %d, %s",
+                    mSource.getApplicationId(), status.getStatusCode(), status.getStatusMessage());
             reportError();
             return;
         }

chrome/android/java/src/org/chromium/chrome/browser/media/router/cast/remoting/RemotingMediaSource.java

@@ -33,7 +33,7 @@ public class RemotingMediaSource implements MediaSource {
     /**
      * The Cast application id.
      */
-    private String mApplicationId = null;
+    private final String mApplicationId;
 
     /**
      * The URL to fling to the Cast device.
@@ -61,7 +61,9 @@ public static RemotingMediaSource from(String sourceId) {
             return null;
         }
 
-        return new RemotingMediaSource(sourceId, mediaUrl);
+        // TODO(avayvod): check the content URL and override the app id if needed.
+        String applicationId = CastMediaControlIntent.DEFAULT_MEDIA_RECEIVER_APPLICATION_ID;
+        return new RemotingMediaSource(sourceId, applicationId, mediaUrl);
     }
 
     /**
@@ -73,7 +75,7 @@ public static RemotingMediaSource from(String sourceId) {
     @Override
     public MediaRouteSelector buildRouteSelector() {
         return new MediaRouteSelector.Builder()
-                .addControlCategory(CastMediaControlIntent.categoryForCast(getApplicationId()))
+                .addControlCategory(CastMediaControlIntent.categoryForCast(mApplicationId))
                 .build();
     }
 
@@ -82,12 +84,6 @@ public MediaRouteSelector buildRouteSelector() {
      */
     @Override
     public String getApplicationId() {
-        if (mApplicationId == null) {
-            RemotingAppLauncher.RemotingApp app =
-                    RemotingAppLauncher.instance().getRemotingApp(this);
-
-            mApplicationId = (app != null) ? app.getApplicationId() : "";
-        }
         return mApplicationId;
     }
 
@@ -106,8 +102,9 @@ public String getMediaUrl() {
         return mMediaUrl;
     }
 
-    private RemotingMediaSource(String sourceId, String mediaUrl) {
+    private RemotingMediaSource(String sourceId, String applicationId, String mediaUrl) {
         mSourceId = sourceId;
+        mApplicationId = applicationId;
         mMediaUrl = mediaUrl;
     }
 }

chrome/android/java_sources.gni

@@ -869,8 +869,6 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/media/router/cast/CastSessionInfo.java",
   "java/src/org/chromium/chrome/browser/media/router/cast/ChromeCastSessionManager.java",
   "java/src/org/chromium/chrome/browser/media/router/cast/CreateRouteRequest.java",
-  "java/src/org/chromium/chrome/browser/media/router/cast/remoting/DefaultRemotingApp.java",
-  "java/src/org/chromium/chrome/browser/media/router/cast/remoting/RemotingAppLauncher.java",
   "java/src/org/chromium/chrome/browser/media/router/cast/remoting/RemotingCastSession.java",
   "java/src/org/chromium/chrome/browser/media/router/cast/remoting/RemotingMediaRouteProvider.java",
   "java/src/org/chromium/chrome/browser/media/router/cast/remoting/RemotingMediaSource.java",