media: Clean up MediaCodecBridge and remove subclasses

media/base/android/BUILD.gn

Index: media/base/android/BUILD.gn
diff --git a/media/base/android/BUILD.gn b/media/base/android/BUILD.gn
index e38a39be1798b3a7ab294278a55f2f9a31616d3b..75f8ab6aeea25c8b468c15c7eb266e968b684a76 100644
--- a/media/base/android/BUILD.gn
+++ b/media/base/android/BUILD.gn
@@ -103,12 +103,23 @@ if (is_android) {
     jni_package = "media"
   }
 
+  java_cpp_enum("java_enums") {
+    sources = [
+      "media_codec_bridge.h",
+      "media_codec_direction.h",
+    ]
+  }
+
   android_library("media_java") {
     deps = [
       "//base:base_java",
       "//content/public/android:content_java_resources",
+      "//third_party/android_tools:android_support_annotations_java",
+    ]
+    srcjar_deps = [
+      ":java_enums",
+      "//media/base:java_enums",
     ]
-
     java_files = [
       "java/src/org/chromium/media/AudioManagerAndroid.java",
       "java/src/org/chromium/media/AudioRecordInput.java",