Replace deps with depsformat in GN tool defs

build/toolchain/gcc_toolchain.gni

Index: build/toolchain/gcc_toolchain.gni
diff --git a/build/toolchain/gcc_toolchain.gni b/build/toolchain/gcc_toolchain.gni
index 9ad47a4900ee8b84f68f7aa90852602590e41189..a6d47288799c3e16fcb74558afbea3c23958f0cd 100644
--- a/build/toolchain/gcc_toolchain.gni
+++ b/build/toolchain/gcc_toolchain.gni
@@ -64,14 +64,14 @@ template("gcc_toolchain") {
       command = "$cc -MMD -MF \$out.d \$defines \$includes \$cflags \$cflags_c -c \$in -o \$out"
       description = "CC \$out"
       depfile = "\$out.d"
-      deps = "gcc"
+      depsformat = "gcc"
     }
     tool("cxx") {
       # cflags_pch_cc
       command = "$cxx -MMD -MF \$out.d \$defines \$includes \$cflags \$cflags_cc -c \$in -o \$out"
       description = "CXX \$out"
       depfile = "\$out.d"
-      deps = "gcc"
+      depsformat = "gcc"
     }
     tool("alink") {
       command = "rm -f \$out && $ar rcs \$out @\$rspfile"