Implement review comment on GN optimization setup.

build/config/compiler/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 if (cpu_arch == "arm") {
   import("//build/config/arm.gni")
 }
 
 declare_args() {
@@ skipping 688 matching lines @@
     ]
   } else if (is_android && !android_full_debug) {
     # On Android we kind of optimize some things that don't affect debugging
     # much even when optimization is disabled to get the binary size down.
     cflags = [
       "-Os",
       "-fomit-frame-pointer",
       "-fdata-sections",
       "-ffunction-sections",
     ]
-    ldflags = [
-      "-Wl,-O1",
-      "-Wl,--as-needed",
-      "-Wl,--gc-sections",
-    ]
+    ldflags = common_optimize_on_ldflags
   } else {
     cflags = [ "-O0" ]
   }
 }
 
 # On Windows, turns up the optimization level. This implies whole program
 # optimization and link-time code generation which is very expensive and should
 # be used sparingly. For non-Windows, this is the same as "optimize".
 config("optimize_max") {
   cflags = common_optimize_on_cflags
@@ skipping 25 matching lines @@
     cflags = [ "-g1" ]
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }