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..d9df15fd5a7a25b351fe811ad5c6a34cb5c2ccd0 100644
--- a/device/bluetooth/test/bluetooth_test.h
+++ b/device/bluetooth/test/bluetooth_test.h
@@ -41,6 +41,10 @@ class BluetoothTestBase : public testing::Test {
  public:
   enum class Call { EXPECTED, NOT_EXPECTED };
 
+  // Contains the device id, new value being sent and a flag to indicate if
+  // this is an indication instead.
+  using NotificationType = std::tuple<std::string, std::vector<uint8_t>, bool>;

[scheib, 2016/06/07 05:10:04]

Please use a struct with named members instead of the tuple.

[rkc, 2016/06/09 21:08:27]

Using a struct raises several complications.
First, since this has complex types, the struct now will need to have a out of
line constructor, destructor and copy-constructor. Second, this means that we
need to mirror not just this one line between the fake implementation and here
but rather the declaration and implementation of the structure. Looking at all
of these factors, just using a tuple in the tests seemed like a simpler
solution.

[scheib, 2016/06/09 21:34:35]

If not a struct, then named parameters to the methods. The fake can have three
named members. "std::get<1>(value), std::get<2>(value)" style code has poor
readability.

[rkc, 2016/06/12 00:24:28]

Done.

+
   static const std::string kTestAdapterName;
   static const std::string kTestAdapterAddress;
 
@@ -263,7 +267,7 @@ 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