Fixing naming issues in MediaSession

content/test/BUILD.gn

Index: content/test/BUILD.gn
diff --git a/content/test/BUILD.gn b/content/test/BUILD.gn
index f6f8b8fcbd726d8112de0c2bc7fff8e98ad035d6..c936226734a104638b6cd0919fce69fb02b0551e 100644
--- a/content/test/BUILD.gn
+++ b/content/test/BUILD.gn
@@ -580,11 +580,11 @@ test("content_browsertests") {
     "../browser/media/media_redirect_browsertest.cc",
     "../browser/media/media_source_browsertest.cc",
     "../browser/media/midi_browsertest.cc",
+    "../browser/media/session/audio_focus_delegate_default_browsertest.cc",
     "../browser/media/session/media_session_browsertest.cc",
-    "../browser/media/session/media_session_delegate_default_browsertest.cc",
     "../browser/media/session/media_session_visibility_browsertest.cc",
-    "../browser/media/session/mock_media_session_observer.cc",
-    "../browser/media/session/mock_media_session_observer.h",
+    "../browser/media/session/mock_media_session_player_observer.cc",
+    "../browser/media/session/mock_media_session_player_observer.h",
     "../browser/memory/memory_coordinator_browsertest.cc",
     "../browser/memory/memory_pressure_controller_impl_browsertest.cc",
     "../browser/message_port_provider_browsertest.cc",
@@ -785,12 +785,12 @@ test("content_browsertests") {
   if (is_android) {
     sources += [
       "../browser/accessibility/android_granularity_movement_browsertest.cc",
-      "../browser/media/session/media_session_delegate_android_browsertest.cc",
+      "../browser/media/session/audio_focus_delegate_android_browsertest.cc",
       "../shell/android/browsertests_apk/content_browser_tests_jni_onload.cc",
     ]
     sources -= [
       "../browser/battery_status/battery_monitor_impl_browsertest.cc",
-      "../browser/media/session/media_session_delegate_default_browsertest.cc",
+      "../browser/media/session/audio_focus_delegate_default_browsertest.cc",
     ]
     deps += [
       ":content_browsertests_java",