bluetooth: Add FakeBluetooth interface

device/bluetooth/public/interfaces/BUILD.gn

Index: device/bluetooth/public/interfaces/BUILD.gn
diff --git a/device/bluetooth/public/interfaces/BUILD.gn b/device/bluetooth/public/interfaces/BUILD.gn
index 810489bc065fe1b1cf1860819e1e4ab8aace5232..6f42b7e7f35e7d49039bc8abd539c71b7dc5dc35 100644
--- a/device/bluetooth/public/interfaces/BUILD.gn
+++ b/device/bluetooth/public/interfaces/BUILD.gn
@@ -10,6 +10,12 @@ mojom("interfaces") {
   ]
 }
 
+mojom("test_interfaces") {

[scheib, 2017/04/08 00:59:50]

Let's call this "fake_bluetooth"

[ortuno, 2017/04/10 01:47:49]

To avoid naming both the interface and the component "fake_bluetooth", I went
with fake_bluetooth_interfaces.

+  sources = [
+    "test/fake_bluetooth.mojom",
+  ]
+}
+
 mojom("experimental_interfaces") {
   sources = [
     "adapter.mojom",