Use access directly instead of sk_exists.

Skia would like to move SkOSFile and make it private spi. This appears
to be the only place SkOSFile is used outside Skia, and using access
here directly is more apropriate.

Test: Simple inline refactor, built and ran. Changes test code only.
Change-Id: Ib76c180bb3bccc54c20dcadc842837e3e8270929
diff --git a/libs/hwui/pipeline/skia/SkiaPipeline.cpp b/libs/hwui/pipeline/skia/SkiaPipeline.cpp
index 11dc1f4..10c1865 100644
--- a/libs/hwui/pipeline/skia/SkiaPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaPipeline.cpp
@@ -19,7 +19,6 @@
 #include "utils/TraceUtils.h"
 #include <SkImageEncoder.h>
 #include <SkImagePriv.h>
-#include <SkOSFile.h>
 #include <SkOverdrawCanvas.h>
 #include <SkOverdrawColorFilter.h>
 #include <SkPicture.h>
@@ -27,6 +26,8 @@
 #include <SkPixelSerializer.h>
 #include <SkStream.h>
 
+#include <unistd.h>
+
 using namespace android::uirenderer::renderthread;
 
 namespace android {
@@ -190,7 +191,7 @@
     char prop[PROPERTY_VALUE_MAX];
     if (skpCaptureEnabled()) {
         property_get("debug.hwui.capture_frame_as_skp", prop, "0");
-        recordingPicture = prop[0] != '0' && !sk_exists(prop);
+        recordingPicture = prop[0] != '0' && access(prop, F_OK) != 0;
         if (recordingPicture) {
             recorder.reset(new SkPictureRecorder());
             canvas = recorder->beginRecording(surface->width(), surface->height(),