Revert of MediaPerceptionPrivate API impl and testing.

extensions/browser/api/media_perception_private/media_perception_private_api.h

Index: extensions/browser/api/media_perception_private/media_perception_private_api.h
diff --git a/extensions/browser/api/media_perception_private/media_perception_private_api.h b/extensions/browser/api/media_perception_private/media_perception_private_api.h
index 3528a50f60b8a6c4d55b42d2c7a7a8015966f1cf..16c5733363289b6daff2943175bbfad5e10eae0e 100644
--- a/extensions/browser/api/media_perception_private/media_perception_private_api.h
+++ b/extensions/browser/api/media_perception_private/media_perception_private_api.h
@@ -5,9 +5,7 @@
 #ifndef EXTENSIONS_BROWSER_API_MEDIA_PERCEPTION_PRIVATE_MEDIA_PERCEPTION_PRIVATE_API_H_
 #define EXTENSIONS_BROWSER_API_MEDIA_PERCEPTION_PRIVATE_MEDIA_PERCEPTION_PRIVATE_API_H_
 
-#include "extensions/browser/api/media_perception_private/media_perception_api_manager.h"
 #include "extensions/browser/extension_function.h"
-#include "extensions/common/api/media_perception_private.h"
 
 namespace extensions {
 
@@ -23,9 +21,6 @@
 
   // ExtensionFunction:
   ResponseAction Run() override;
-
-  void GetStateCallback(MediaPerceptionAPIManager::CallbackStatus status,
-                        extensions::api::media_perception_private::State state);
 
   DISALLOW_COPY_AND_ASSIGN(MediaPerceptionPrivateGetStateFunction);
 };
@@ -43,9 +38,6 @@
   // ExtensionFunction:
   ResponseAction Run() override;
 
-  void SetStateCallback(MediaPerceptionAPIManager::CallbackStatus status,
-                        extensions::api::media_perception_private::State state);
-
   DISALLOW_COPY_AND_ASSIGN(MediaPerceptionPrivateSetStateFunction);
 };
 
@@ -62,10 +54,6 @@
   // ExtensionFunction:
   ResponseAction Run() override;
 
-  void GetDiagnosticsCallback(
-      MediaPerceptionAPIManager::CallbackStatus status,
-      extensions::api::media_perception_private::Diagnostics diagnostics);
-
   DISALLOW_COPY_AND_ASSIGN(MediaPerceptionPrivateGetDiagnosticsFunction);
 };