[Nearby Directory Refactoring] Move nearby/proto codes into the appropriate directories.

PiperOrigin-RevId: 421636973

cpp/platform/api/BUILD

@@ -71,9 +71,9 @@ cc_library(
     deps = [
         "//absl/strings",
         "//absl/types:optional",
+        "//connections/implementation/proto:offline_wire_formats_portable_proto",
         "//platform/base",
         "//platform/base:cancellation_flag",
-        "//proto/connections:offline_wire_formats_portable_proto",
         "//webrtc/api:libjingle_peerconnection_api",
     ],
 )

cpp/platform/api/webrtc.h

@@ -20,8 +20,8 @@
 #include <string>
 
 #include "absl/strings/string_view.h"
+#include "connections/implementation/proto/offline_wire_formats.pb.h"
 #include "platform/base/byte_array.h"
-#include "proto/connections/offline_wire_formats.pb.h"
 #include "webrtc/api/peer_connection_interface.h"
 
 namespace location {