bluetooth: Add device list retrieval for chrome://bluetooth-internals

device/bluetooth/BUILD.gn

Index: device/bluetooth/BUILD.gn
diff --git a/device/bluetooth/BUILD.gn b/device/bluetooth/BUILD.gn
index 17d2e4d862f39e65401a16664f07310ccfddcc70..e4ed0df6e5205cf4d57f98494d71c5d31438db32 100644
--- a/device/bluetooth/BUILD.gn
+++ b/device/bluetooth/BUILD.gn
@@ -20,6 +20,18 @@ config("bluetooth_config") {
   }
 }
 
+source_set("mojo") {

[ortuno, 2016/09/28 09:44:55]

Should this be called experimental_mojo, maybe? scheib?

Also out of curiosity why is this a source_set rather than a component? I see
examples of both in the codebase.

[mbrunson, 2016/09/28 21:20:35]

I originally had it as a component, but it was giving me issues. I noticed
device/usb/mojo used source_set so I changed it to that and it seemed to fix
some problems I was having.

[ortuno, 2016/09/29 01:43:06]

Ideally this would be a component so that users wouldn't have to recompile it.
But I see that all interfaces that are used by //chrome are static libraries so
I think we have no choice :(

[mbrunson, 2016/09/29 02:50:23]

Hmm...I changed it into a component and added the defines and flags but I'm
still getting linker errors for bluetooth::mojom::Adapter::Name_. I'll look into
this some more tomorrow.

+  sources = [
+    "adapter.cc",
+    "adapter.h",
+  ]
+
+  public_deps = [
+    ":bluetooth",
+    "//device/bluetooth/public/interfaces:experimental_interfaces",
+  ]
+}
+
 component("bluetooth") {
   sources = [
     "android/bluetooth_jni_registrar.cc",