Make skia compile in Android GN build.

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")
 }
 if (is_posix) {
   import("//build/config/gcc/gcc_version.gni")
@@ skipping 656 matching lines @@
 } else {
   common_optimize_on_cflags = [
     # Don't emit the GCC version ident directives, they just end up in the
     # .comment section taking up binary size.
     "-fno-ident",
     # Put data and code in their own sections, so that unused symbols
     # can be removed at link time with --gc-sections.
     "-fdata-sections",
     "-ffunction-sections",
   ]
+  common_optimize_on_ldflags = []
 
-  common_optimize_on_ldflags = []
+  if (is_android) {
+    common_optimize_on_cflags += [
+      "-fomit-frame-pointer",
+    ]
+    common_optimize_on_ldflags += [
+      # Warn in case of text relocations.
+      "-Wl,--warn-shared-textrel",
+    ]
+  }
+
   if (is_mac) {
     if (symbol_level == 2) {
       # Mac dead code stripping requires symbols.
       common_optimize_on_ldflags += [
         "-Wl,-dead_strip",
       ]
     }
   } else {
     # Non-Mac Posix linker flags.
     common_optimize_on_ldflags += [
@@ skipping 78 matching lines @@
   } else {
     cflags = [ "-g1" ]
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }