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 248fb6d10c26135192df79f858a166275b872532..aa1412c3f3b7173484af46954494c55ea90686bd 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
@@ -5,6 +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"
 
@@ -25,6 +26,9 @@ class MediaPerceptionPrivateGetStateFunction
   // ExtensionFunction:
   ResponseAction Run() override;
 
+  void GetStateCallback(MediaPerceptionAPIManager::CallbackStatus status,
+                        media_perception::State state);
+
   DISALLOW_COPY_AND_ASSIGN(MediaPerceptionPrivateGetStateFunction);
 };
 
@@ -41,6 +45,9 @@ class MediaPerceptionPrivateSetStateFunction
   // ExtensionFunction:
   ResponseAction Run() override;
 
+  void SetStateCallback(MediaPerceptionAPIManager::CallbackStatus status,
+                        media_perception::State state);
+
   DISALLOW_COPY_AND_ASSIGN(MediaPerceptionPrivateSetStateFunction);
 };
 
@@ -57,6 +64,9 @@ class MediaPerceptionPrivateGetDiagnosticsFunction
   // ExtensionFunction:
   ResponseAction Run() override;
 
+  void GetDiagnosticsCallback(MediaPerceptionAPIManager::CallbackStatus status,
+                              media_perception::Diagnostics diagnostics);
+
   DISALLOW_COPY_AND_ASSIGN(MediaPerceptionPrivateGetDiagnosticsFunction);
 };