bluetooth: Enable device_unittests target on Android.

build/all.gyp

Index: build/all.gyp
diff --git a/build/all.gyp b/build/all.gyp
index 2cb463ef2aeb07c9cc19e14aa58e6b053fc9d2f7..2a8282f72be568dc702ed43883e5f7c279c36688 100644
--- a/build/all.gyp
+++ b/build/all.gyp
@@ -108,8 +108,6 @@
             '../chrome/tools/profile_reset/jtl_compiler.gyp:*',
             '../cc/blink/cc_blink_tests.gyp:*',
             '../cc/cc_tests.gyp:*',
-            '../device/bluetooth/bluetooth.gyp:*',
-            '../device/device_tests.gyp:*',
             '../device/usb/usb.gyp:*',
             '../gin/gin.gyp:*',
             '../gpu/gpu.gyp:*',
@@ -150,6 +148,12 @@
             '<(libjpeg_gyp_path):*',
           ],
         }],
+        ['OS!="ios"', {
+          'dependencies': [
+            '../device/bluetooth/bluetooth.gyp:*',
+            '../device/device_tests.gyp:*',
+          ],
+        }],
         ['use_openssl==0 and (OS=="mac" or OS=="ios" or OS=="win")', {
           'dependencies': [
             '../third_party/nss/nss.gyp:*',