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

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 @@ void SkiaPipeline::renderFrame(const LayerUpdateQueue& layers, const SkRect& cli
     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(),