Move rpath ldflags under is_component_build

build/toolchain/mac/BUILD.gn

Index: build/toolchain/mac/BUILD.gn
diff --git a/build/toolchain/mac/BUILD.gn b/build/toolchain/mac/BUILD.gn
index 7f63f6f15ca49d36575a2729601507349a313f5f..2ef06d569fa37b90522e598f0a0d693f8bbfffcb 100644
--- a/build/toolchain/mac/BUILD.gn
+++ b/build/toolchain/mac/BUILD.gn
@@ -114,7 +114,7 @@ template("mac_toolchain") {
       dylib = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}"  # eg "./libfoo.dylib"
       rspfile = dylib + ".rsp"
 
-      # These variables are not build into GN but are helpers that implement
+      # These variables are not built into GN but are helpers that implement
       # (1) linking to produce a .so, (2) extracting the symbols from that file
       # to a temporary file, (3) if the temporary file has differences from the
       # existing .TOC file, overwrite it, oterwise, don't change it.