Build without -Wno-implicit-int-float-conversion.

The warning does occasionally flag interesting issues, e.g. when a
literal cannot be accurately represented as a float.

Change-Id: Ie3e285b26838be20e012051d345f79b7afee6e0d
diff --git a/gn/standalone/BUILD.gn b/gn/standalone/BUILD.gn
index 40127a6..b7916b7 100644
--- a/gn/standalone/BUILD.gn
+++ b/gn/standalone/BUILD.gn
@@ -19,12 +19,7 @@
 
 # These warnings have been introduced with the newest version of clang (only in
 # the hermetic build) and are enabled just with -Werror.
-# TODO(primiano): we should look into Wimplicit-int-float-conversion. Seems
-# failing mostly in tests though.
-hermetic_clang_suppressions = [
-  "-Wno-c99-designator",
-  "-Wno-implicit-int-float-conversion",
-]
+hermetic_clang_suppressions = [ "-Wno-c99-designator" ]
 
 config("extra_warnings") {
   cflags = [