Update screen capture functions to accept a ScreenCaptureListener

Move all screen capture functions to be asynchronous. The screen capture
functions will no longer wait for screenshot results and will return
immediately.

Test: adb shell screencap
Test: power + volume down
Bug: 162367424
Change-Id: I0fd32ede58d3d0a858fc0ce4aae058b9a9234c00
diff --git a/services/surfaceflinger/tests/utils/ScreenshotUtils.h b/services/surfaceflinger/tests/utils/ScreenshotUtils.h
index 1d94f21..ca3551e 100644
--- a/services/surfaceflinger/tests/utils/ScreenshotUtils.h
+++ b/services/surfaceflinger/tests/utils/ScreenshotUtils.h
@@ -15,32 +15,16 @@
  */
 #pragma once
 
+#include <gui/SyncScreenCaptureListener.h>
 #include <ui/Rect.h>
 #include <utils/String8.h>
 #include <functional>
-#include <future>
 #include "TransactionUtils.h"
 
 namespace android {
 
 namespace {
 
-class SyncScreenCaptureListener : public BnScreenCaptureListener {
-public:
-    status_t onScreenCaptureComplete(const ScreenCaptureResults& captureResults) override {
-        resultsPromise.set_value(captureResults);
-        return NO_ERROR;
-    }
-
-    ScreenCaptureResults waitForResults() {
-        std::future<ScreenCaptureResults> resultsFuture = resultsPromise.get_future();
-        return resultsFuture.get();
-    }
-
-private:
-    std::promise<ScreenCaptureResults> resultsPromise;
-};
-
 // A ScreenCapture is a screenshot from SurfaceFlinger that can be used to check
 // individual pixel values for testing purposes.
 class ScreenCapture : public RefBase {