Fixed ProviderTestUtils.

- Increased ProviderTestUtils.IO_TIMEOUT to 2s (100ms was not long enough without retries).
- Removed file existance check from stageDir() (as that method does not create the directory).

Fixes: 134372686
Test: atest CtsProviderTestCases

Change-Id: I27997861a3ae6146a553da0e020bbac72568c95b
diff --git a/tests/tests/provider/src/android/provider/cts/MediaStore_Images_MediaTest.java b/tests/tests/provider/src/android/provider/cts/MediaStore_Images_MediaTest.java
index 9c72e41..a343c76 100644
--- a/tests/tests/provider/src/android/provider/cts/MediaStore_Images_MediaTest.java
+++ b/tests/tests/provider/src/android/provider/cts/MediaStore_Images_MediaTest.java
@@ -229,7 +229,9 @@
         cleanExternalMediaFile(externalPath2);
 
         int numBytes = 1337;
-        FileUtils.createFile(new File(externalPath), numBytes);
+        File file = new File(externalPath);
+        FileUtils.createFile(file, numBytes);
+        ProviderTestUtils.waitUntilExists(file);
 
         ContentValues values = new ContentValues();
         values.put(Media.ORIENTATION, 0);
@@ -281,7 +283,7 @@
         } finally {
             // delete
             assertEquals(1, mContentResolver.delete(uri, null, null));
-            new File(externalPath).delete();
+            file.delete();
         }
     }
 
diff --git a/tests/tests/provider/src/android/provider/cts/ProviderTestUtils.java b/tests/tests/provider/src/android/provider/cts/ProviderTestUtils.java
index a106a1c..b2db009 100644
--- a/tests/tests/provider/src/android/provider/cts/ProviderTestUtils.java
+++ b/tests/tests/provider/src/android/provider/cts/ProviderTestUtils.java
@@ -72,7 +72,7 @@
     private static final Pattern PATTERN_STORAGE_PATH = Pattern.compile(
             "(?i)^/storage/[^/]+/(?:[0-9]+/)?");
 
-    private static final Timeout IO_TIMEOUT = new Timeout("IO_TIMEOUT", 100, 2, 2_000);
+    private static final Timeout IO_TIMEOUT = new Timeout("IO_TIMEOUT", 2_000, 2, 2_000);
 
     static Iterable<String> getSharedVolumeNames() {
         // We test both new and legacy volume names
@@ -186,7 +186,7 @@
      *
      * @return existing file.
      */
-    private static File waitUntilExists(File file) throws IOException {
+    public static File waitUntilExists(File file) throws IOException {
         try {
             return IO_TIMEOUT.run("file '" + file + "' doesn't exist yet", () -> {
                 return file.exists() ? file : null; // will retry if it returns null
@@ -203,7 +203,7 @@
         File dir = Environment.buildPath(MediaStore.getVolumePath(volumeName), "Android", "media",
                 "android.provider.cts");
         Log.d(TAG, "stageDir(" + volumeName + "): returning " + dir);
-        return waitUntilExists(dir);
+        return dir;
     }
 
     static File stageDownloadDir(String volumeName) throws IOException {