Added leanback support libraries as dependencies

build/secondary/third_party/android_tools/BUILD.gn

Index: build/secondary/third_party/android_tools/BUILD.gn
diff --git a/build/secondary/third_party/android_tools/BUILD.gn b/build/secondary/third_party/android_tools/BUILD.gn
index cf59b20e811a56a21de433bba1fd9816464f1988..36526a38c782515bba67d91fd4960222bbf10cb7 100644
--- a/build/secondary/third_party/android_tools/BUILD.gn
+++ b/build/secondary/third_party/android_tools/BUILD.gn
@@ -157,6 +157,44 @@ android_aar_prebuilt("android_support_v7_recyclerview_java") {
   aar_path = "$lib_path/$_lib_name/$lib_version/$_lib_name-$lib_version.aar"
 }
 
+android_aar_prebuilt("android_support_v7_preference_java") {
+  deps = [
+    ":android_support_v7_appcompat_java",
+  ]
+  _lib_name = "preference-v7"
+  aar_path = "$lib_path/$_lib_name/$lib_version/$_lib_name-$lib_version.aar"
+}
+
+android_aar_prebuilt("android_support_v14_preference_java") {
+  deps = [
+    ":android_support_v7_preference_java",
+  ]
+  _lib_name = "preference-v14"
+  aar_path = "$lib_path/$_lib_name/$lib_version/$_lib_name-$lib_version.aar"
+}
+
+android_aar_prebuilt("android_support_v17_leanback_java") {
+  deps = [
+    ":android_support_v4_java",
+    ":android_support_v7_recyclerview_java",
+  ]
+  _lib_name = "leanback-v17"
+  aar_path = "$lib_path/$_lib_name/$lib_version/$_lib_name-$lib_version.aar"
+}
+
+android_aar_prebuilt("android_support_v17_preference_java") {

[halliwell, 2017/03/29 01:05:52]

should this have leanback in its name?

+  deps = [
+    ":android_support_v14_preference_java",
+    ":android_support_v17_leanback_java",
+    ":android_support_v4_java",
+    ":android_support_v7_appcompat_java",
+    ":android_support_v7_preference_java",
+    ":android_support_v7_recyclerview_java",
+  ]
+  _lib_name = "preference-leanback-v17"
+  aar_path = "$lib_path/$_lib_name/$lib_version/$_lib_name-$lib_version.aar"
+}
+
 # TODO(dgn): Remove this once no other target has a dependency on it
 java_group("google_play_services_default_resources") {
   deps = []
@@ -178,14 +216,6 @@ java_group("google_play_services_default_java") {
   ]
 }
 
-android_aar_prebuilt("android_support_v17_leanback_java") {
-  deps = [
-    ":android_support_v7_recyclerview_java",
-  ]
-  _lib_name = "leanback-v17"
-  aar_path = "$lib_path/$_lib_name/$lib_version/$_lib_name-$lib_version.aar"
-}
-
 # TODO(jbudorick): Remove this once net_java_test_support no longer needs it.
 android_java_prebuilt("legacy_http_javalib") {
   testonly = true