[AllN] opt out of implicit-int-float-conversion warning

Bug: 3203
Change-Id: I30e0691d3877c9569684e79c1e8292fb0f7cc568
diff --git a/BUILD.gn b/BUILD.gn
index 5862cb6..4ce5b5d 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -58,6 +58,7 @@
     "fuchsia",
   ]
   cflags = [
+    "-Wno-implicit-int-float-conversion",
     "-Wno-newline-eof",
     "-Wno-pointer-sign",
   ]