bluetooth: Separate readValue tests

third_party/WebKit/LayoutTests/bluetooth/readValue/read-succeeds.html

Index: third_party/WebKit/LayoutTests/bluetooth/readValue/read-succeeds.html
diff --git a/third_party/WebKit/LayoutTests/bluetooth/writeValue/write-succeeds.html b/third_party/WebKit/LayoutTests/bluetooth/readValue/read-succeeds.html
similarity index 65%
copy from third_party/WebKit/LayoutTests/bluetooth/writeValue/write-succeeds.html
copy to third_party/WebKit/LayoutTests/bluetooth/readValue/read-succeeds.html
index 5b37b3c12eae7e19cfe3b3ef6e7678fd13f9d555..590948a547e70fa14bff9035215b0a54c395837c 100644
--- a/third_party/WebKit/LayoutTests/bluetooth/writeValue/write-succeeds.html
+++ b/third_party/WebKit/LayoutTests/bluetooth/readValue/read-succeeds.html
@@ -12,9 +12,11 @@ promise_test(() => {
     .then(device => device.gatt.connect())
     .then(gattServer => gattServer.getPrimaryService('generic_access'))
     .then(service => service.getCharacteristic('gap.device_name'))
-    .then(characteristic => Promise.all([
-      characteristic.writeValue(new Uint8Array(1 /* length */)),
-      characteristic.writeValue(new ArrayBuffer(1 /* length */)),
-      characteristic.writeValue(new DataView(new ArrayBuffer(1 /* length */)))]));
-}, 'A regular write request to a writable characteristic should succeed.');
+    .then(characteristic => characteristic.readValue())
+    .then(value => {
+      let decoder = new TextDecoder('utf-8');
+      let value_str = decoder.decode(value);
+      assert_equals(value_str, 'Heart Rate Device');
+    });
+}, 'A read request succeeds and returns the characteristic\'s value.');
 </script>