device: Restructure the layout of gyp files.

This follow the same structure used by ui/keyboard/.

Now the directory hierachy looks like this:

device/bluetooth/bluetooth.gyp
device/bluetooth/bluetooth_strings.gyp
device/bluetooth/bluetooth_strings.grd
device/bluetooth/strings
device/usb/usb.gyp

R=bryeung@chromium.org,miket@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16231013

git-svn-id: http://src.chromium.org/svn/trunk/src/build@203652 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -35,7 +35,9 @@
           'dependencies': [
             '../cc/cc_tests.gyp:*',
             '../components/components.gyp:*',
+            '../device/bluetooth/bluetooth.gyp:*',
             '../device/device.gyp:*',
+            '../device/usb/usb.gyp:*',
             '../gpu/gpu.gyp:*',
             '../gpu/tools/tools.gyp:*',
             '../ipc/ipc.gyp:*',