Add media2 build target to prevent hidden API usage in MediaPlayer2

The only hidden API usuage, c-tor of TimedText, is temporarily commented
out.

Test: make media2
Bug: 112766913
Change-Id: I6330724e65bb42db678f23134677dfd8675a3970

media/Android.bp

@@ -0,0 +1,36 @@
+java_library {
+    // TODO: include media2.jar in the media apex and add it to the bootclasspath.
+    name: "media2",
+
+    srcs: [
+        ":media2-srcs",
+        ":framework-media-annotation-srcs",
+    ],
+
+    static_libs: [
+        "mediaplayer2-protos",
+    ],
+
+    // Make sure that the implementaion only relies on SDK or system APIs.
+    sdk_version: "system_current",
+}
+
+filegroup {
+    name: "media2-srcs",
+    srcs: [
+        "java/android/media/CloseGuard.java",
+        "java/android/media/DataSourceCallback.java",
+        "java/android/media/DataSourceDesc.java",
+        "java/android/media/UriDataSourceDesc.java",
+        "java/android/media/FileDataSourceDesc.java",
+        "java/android/media/CallbackDataSourceDesc.java",
+        "java/android/media/VideoSize.java",
+        "java/android/media/Media2Utils.java",
+        "java/android/media/MediaPlayer2Utils.java",
+        "java/android/media/MediaPlayer2.java",
+        "java/android/media/Media2HTTPService.java",
+        "java/android/media/Media2HTTPConnection.java",
+        "java/android/media/RoutingDelegate.java",
+        "java/android/media/BufferingParams.java",
+    ],
+}

media/java/android/media/MediaPlayer2.java

@@ -3960,7 +3960,12 @@ public class MediaPlayer2 implements AutoCloseable
                     textBounds = new Rect(left, top, right, bottom);
                 }
             }
+            return null;
+            /* TimedText c-tor usage is temporarily commented out.
+             * TODO(b/117527789): use SUBTITLE path for MEDIA_MIMETYPE_TEXT_3GPP track
+             *                    and remove TimedText path from MediaPlayer2.
             return new TimedText(textChars, textBounds);
+            */
         }
     }