Add support in Chrome to send notifications to a specific device.

device/bluetooth/test/bluetooth_test.h

Index: device/bluetooth/test/bluetooth_test.h
diff --git a/device/bluetooth/test/bluetooth_test.h b/device/bluetooth/test/bluetooth_test.h
index 5b7caaf148c8a32926d3642635f6b6f80ae2758c..157865fd0ae8373957be16b60cfa85f7075f8310 100644
--- a/device/bluetooth/test/bluetooth_test.h
+++ b/device/bluetooth/test/bluetooth_test.h
@@ -41,6 +41,19 @@ class BluetoothTestBase : public testing::Test {
  public:
   enum class Call { EXPECTED, NOT_EXPECTED };
 
+  struct NotificationType {
+    NotificationType();
+    NotificationType(std::string device_path,
+                     std::vector<uint8_t> value,
+                     bool indicate);
+    NotificationType(const NotificationType& obj);
+    ~NotificationType();
+
+    std::string device_path;
+    std::vector<uint8_t> value;
+    bool indicate;
+  };
+
   static const std::string kTestAdapterName;
   static const std::string kTestAdapterAddress;
 
@@ -263,7 +276,7 @@ class BluetoothTestBase : public testing::Test {
 
   // Returns the value for the last notification that was sent on this
   // characteristic.
-  virtual std::vector<uint8_t> LastNotifactionValueForCharacteristic(
+  virtual NotificationType LastNotifactionValueForCharacteristic(
       BluetoothLocalGattCharacteristic* characteristic);
 
   // Remembers |descriptor|'s platform specific object to be used in a