Enable libc++ on Android

build/config/android/config.gni

 # Copyright 2014 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.
 
 # This file contains common system config stuff for the Android build.
 
 if (is_android) {
   has_chrome_android_internal =
       exec_script("//build/dir_exists.py",
                   [ rebase_path("//clank", root_build_dir) ],
@@ skipping 111 matching lines @@
   } else {
     assert(false, "Need android libgcc support for your target arch.")
   }
 
   android_tool_prefix = "$android_toolchain_root/bin/$_binary_prefix-"
   android_readelf = "${android_tool_prefix}readelf"
   android_objcopy = "${android_tool_prefix}objcopy"
   android_gdbserver =
       "$android_ndk_root/prebuilt/$android_prebuilt_arch/gdbserver/gdbserver"
 
-  # stlport stuff --------------------------------------------------------------
+  # Libc++ stuff ---------------------------------------------------------------

[Fabrice (no longer in Chrome), 2015/02/04 13:24:23]

I think this whole section can go to compiler/BUILD.gn
That's the only place where the variable is used.
In fact, in the current state it's not even used anywhere.

[jdduke (slow), 2015/02/05 18:37:15]

Done.

 
   if (component_mode == "shared_library") {
-    android_stlport_library = "stlport_shared"
+    android_libcpp_library = "c++_shared"
   } else {
-    android_stlport_library = "stlport_static"
+    android_libcpp_library = "c++_static"
   }
 
   # ABI ------------------------------------------------------------------------
 
   if (cpu_arch == "x86") {
     android_app_abi = "x86"
   } else if (cpu_arch == "arm") {
     import("//build/config/arm.gni")
     if (arm_version < 7) {
       android_app_abi = "armeabi"
     } else {
       android_app_abi = "armeabi-v7a"
     }
   } else if (cpu_arch == "mipsel") {
     android_app_abi = "mips"
   } else {
     assert(false, "Unknown Android ABI: " + cpu_arch)
   }
 } else {
   if (!defined(is_android_webview_build)) {
     is_android_webview_build = false
   }
 }