Fix client roll

This change was made in the client master, but, since the bp file is
autogenerated, it has broken all subsequent rolls.

BUG=skia:

Change-Id: I722c020414f2700c50bf4a1b5936d993e44864a1
Reviewed-on: https://skia-review.googlesource.com/8730
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>

gn/gn_to_bp.py

@@ -37,6 +37,7 @@ tool_shared_libs = [
 
 # The ordering here is important: libsfntly needs to come after libskia.
 tool_static_libs = [
+    'libarect',
     'libjsoncpp',
     'libskia',
     'libsfntly',