ImageCapture: Implement focus mode for Android and Fake Video Capture Devices

media/mojo/interfaces/image_capture.mojom

Index: media/mojo/interfaces/image_capture.mojom
diff --git a/media/mojo/interfaces/image_capture.mojom b/media/mojo/interfaces/image_capture.mojom
index f712837881233d5cb5521f51f827aaa85d420076..a2153bf255123bd275e2282b80bfd9a431b212b1 100644
--- a/media/mojo/interfaces/image_capture.mojom
+++ b/media/mojo/interfaces/image_capture.mojom
@@ -13,10 +13,13 @@ struct Range {
   uint32 current;
 };
 
+enum FocusMode { UNAVAILABLE, AUTO, MANUAL };
+
 // Equivalent to idl PhotoCapabilities,
 // https://w3c.github.io/mediacapture-image/#photocapabilities
 struct PhotoCapabilities {
   Range zoom;
+  FocusMode focus_mode;
 };
 
 // Equivalent to idl PhotoSettings,