bluetooth: Make device/bluetooth a shared library component.

device/bluetooth/bluetooth_adapter_chromeos.h

Index: device/bluetooth/bluetooth_adapter_chromeos.h
diff --git a/device/bluetooth/bluetooth_adapter_chromeos.h b/device/bluetooth/bluetooth_adapter_chromeos.h
index bd9ec9e8c298203e45c700af5da97f6e8f878986..30deae6d8cec00ce23faf0a2ab8e1fe225947b43 100644
--- a/device/bluetooth/bluetooth_adapter_chromeos.h
+++ b/device/bluetooth/bluetooth_adapter_chromeos.h
@@ -17,6 +17,7 @@
 #include "dbus/object_path.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_device.h"
+#include "device/bluetooth/bluetooth_export.h"
 
 namespace device {
 class BluetoothSocketThread;
@@ -33,7 +34,7 @@ class BluetoothRemoteGattServiceChromeOS;
 
 // The BluetoothAdapterChromeOS class implements BluetoothAdapter for the
 // Chrome OS platform.
-class BluetoothAdapterChromeOS
+class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterChromeOS

[armansito, 2014/12/03 00:20:34]

One of the discussions that I was having with isherman@ on his CL was whether or
not we want to export the symbols for platform-specific implementations, though
not doing so caused problems with device_unittests.

[Ilya Sherman, 2014/12/03 01:10:46]

Yeah, I think the explicit goal of adding export macros was to *not* export the
platform-specific implementations.

[scheib, 2014/12/03 04:21:04]

I think this is orthogonal to the code being a static lib or a shared lib. We
shouldn't conflate the two. 

     : public device::BluetoothAdapter,
       public chromeos::BluetoothAdapterClient::Observer,
       public chromeos::BluetoothDeviceClient::Observer,