Partially remove dependency on folly async

Summary:
This change isolates the usage of folly async from Flipper. Is now self-contained in Flipper Folly schedulers.

Users of Flipper can decide not to use the types defined in that header and implement their own.

NOTE: changes are minimal, we are just replacing direct calls to folly event base with a scheduler which simply relays this on to folly.

Reviewed By: fabiomassimo

Differential Revision: D36626483

fbshipit-source-id: add0241caf4af0aa5c3b5c2e7efc2e725f5400ab

xplat/FlipperWebSocket/BaseClient.h

@@ -9,11 +9,11 @@
 
 #pragma once
 
+#include <Flipper/FlipperScheduler.h>
 #include <Flipper/FlipperSocket.h>
 #include <Flipper/FlipperSocketProvider.h>
 #include <Flipper/FlipperTransportTypes.h>
 #include <folly/dynamic.h>
-#include <folly/io/async/EventBase.h>
 #include <future>
 #include <memory>
 #include <mutex>
@@ -37,18 +37,18 @@ class BaseClient {
   BaseClient(
       FlipperConnectionEndpoint endpoint,
       std::unique_ptr<FlipperSocketBasePayload> payload,
-      folly::EventBase* eventBase)
+      Scheduler* scheduler)
       : endpoint_(std::move(endpoint)),
         payload_(std::move(payload)),
-        eventBase_(eventBase) {}
+        scheduler_(scheduler) {}
   BaseClient(
       FlipperConnectionEndpoint endpoint,
       std::unique_ptr<FlipperSocketBasePayload> payload,
-      folly::EventBase* eventBase,
+      Scheduler* scheduler,
       ConnectionContextStore* connectionContextStore)
       : endpoint_(std::move(endpoint)),
         payload_(std::move(payload)),
-        eventBase_(eventBase),
+        scheduler_(scheduler),
         connectionContextStore_(connectionContextStore) {}
 
   BaseClient(const BaseClient&) = delete;
@@ -84,7 +84,7 @@ class BaseClient {
  protected:
   FlipperConnectionEndpoint endpoint_;
   std::unique_ptr<FlipperSocketBasePayload> payload_;
-  folly::EventBase* eventBase_;
+  Scheduler* scheduler_;
   ConnectionContextStore* connectionContextStore_;
 
   SocketEventHandler eventHandler_;