Add the chrome.bluetoothLowEnergy.setAdvertisingInterval API.

chrome/test/data/extensions/api_test/bluetooth_low_energy/set_advertising_interval/runtest.js

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+function failOnError() {
+  if (chrome.runtime.lastError) {
+    chrome.test.fail(chrome.runtime.lastError.message);
+    return true;
+  }
+  return false;
+}
+
+function failOnSuccess() {
+  if (!chrome.runtime.lastError) {
+    chrome.test.fail('lastError not set, operation succeeded.');
+    return true;
+  }
+  return false;
+}
+
+// Normal correct input.
+chrome.bluetoothLowEnergy.setAdvertisingInterval(100, 200, function() {
+  if (failOnError())
+    return;
+  // Correct input still.
+  chrome.bluetoothLowEnergy.setAdvertisingInterval(30, 30, function() {
+    if (failOnError())
+      return;
+    // Incorrect input, out of bounds (min).
+    chrome.bluetoothLowEnergy.setAdvertisingInterval(19, 30, function() {
+      if (failOnSuccess())
+        return;
+      // Incorrect input, out of bounds (max).
+      chrome.bluetoothLowEnergy.setAdvertisingInterval(100, 10241, function() {
+        if (failOnSuccess())
+          return;
+        // Incorrect input, min > max.
+        chrome.bluetoothLowEnergy.setAdvertisingInterval(100, 50, function() {
+          if (failOnSuccess())
+            return;
+          // Correct input, min.
+          chrome.bluetoothLowEnergy.setAdvertisingInterval(20, 50, function() {
+            if (failOnError())
+              return;
+            // Correct input, max.
+            chrome.bluetoothLowEnergy.setAdvertisingInterval(50, 10240,
+                function() {
+              if (failOnError())
+                return;
+              chrome.test.succeed()
+            });
+          });
+        });
+      });
+    });
+  });
+});