Short-circuit failures in BLE js tests

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

Index: chrome/test/data/extensions/api_test/bluetooth_low_energy/get_descriptors/runtest.js
diff --git a/chrome/test/data/extensions/api_test/bluetooth_low_energy/get_descriptors/runtest.js b/chrome/test/data/extensions/api_test/bluetooth_low_energy/get_descriptors/runtest.js
index 86c4d7c8fa20a66adc66493ba651c38567a06287..067f6737929750696d8c808f3d49df3e5036b8a2 100644
--- a/chrome/test/data/extensions/api_test/bluetooth_low_energy/get_descriptors/runtest.js
+++ b/chrome/test/data/extensions/api_test/bluetooth_low_energy/get_descriptors/runtest.js
@@ -37,27 +37,28 @@ var descrs = null;
 
 function failOnError() {
   if (chrome.runtime.lastError) {
-    chrome.test.fail(chrome.runtime.lastError.message);
+    chrome.test.sendMessage(chrome.runtime.lastError.message);
   }
 }
 
 // 1. Unknown characteristic ID.
 getDescriptors(badCharId, function (result) {
   if (result || !chrome.runtime.lastError) {
-    chrome.test.fail('getDescriptors should have failed for \'badCharId\'');
+    chrome.test.sendMessage('getDescriptors should have failed ' +
+        'for \'badCharId\'');
   }
 
   // 2. Known ID, unknown characteristic.
   getDescriptors(charId, function (result) {
     if (result || !chrome.runtime.lastError) {
-      chrome.test.fail('getDescriptors should have failed');
+      chrome.test.sendMessage('getDescriptors should have failed');
     }
 
     // 3. Empty descriptors.
     getDescriptors(charId, function (result) {
       failOnError();
       if (!result || result.length != 0) {
-        chrome.test.fail('Descriptors should be empty');
+        chrome.test.sendMessage('Descriptors should be empty');
       }
 
       // 4. Success.