Migrate weave-related classes from proximity_auth/ble to cryptauth/ble.

components/proximity_auth/connection_finder.h

Index: components/proximity_auth/connection_finder.h
diff --git a/components/proximity_auth/connection_finder.h b/components/proximity_auth/connection_finder.h
index 08230bee64597b3bf26c7487b7ae0bf0147fda6c..b28d524278a58f7c9c77ac4dee324f8fd6b99280 100644
--- a/components/proximity_auth/connection_finder.h
+++ b/components/proximity_auth/connection_finder.h
@@ -9,11 +9,10 @@
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
+#include "components/cryptauth/connection.h"
 
 namespace proximity_auth {
 
-class Connection;
-
 // Interface for finding a connection to a remote device.
 class ConnectionFinder {
  public:
@@ -24,7 +23,8 @@ class ConnectionFinder {
   // |connection_callback| with the open connection once the remote device is
   // connected.
   // TODO(isherman): Can this just be done as part of the constructor?
-  typedef base::Callback<void(std::unique_ptr<Connection> connection)>
+  typedef base::Callback<void(
+      std::unique_ptr<cryptauth::Connection> connection)>
       ConnectionCallback;
   virtual void Find(const ConnectionCallback& connection_callback) = 0;
 };