Build 64bit browser for Android with clang for ARMv8

build/config/android/BUILD.gn

 # 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/sysroot.gni")
 
 assert(is_android)
 
@@ skipping 72 matching lines @@
     ]
   }
 
   if (is_clang) {
     if (current_cpu == "arm") {
       abi_target = "arm-linux-androideabi"
     } else if (current_cpu == "x86") {
       abi_target = "i686-linux-androideabi"
     } else if (current_cpu == "arm64") {
       # Place holder for arm64 support, not tested.
       # TODO: Enable clang support for Android Arm64. http://crbug.com/539781

[rmcilroy, 2016/05/13 15:11:36]

You could remove the comment and TODO here if this has now been tested.

-      abi_target = "aarch64-linux-androideabi"
+      abi_target = "aarch64-linux-android"
     } else if (current_cpu == "x64") {
       # Place holder for x64 support, not tested.
       # TODO: Enable clang support for Android x64. http://crbug.com/539781
       abi_target = "x86_64-linux-androideabi"
     } else if (current_cpu == "mipsel") {
       abi_target = "mipsel-linux-android"
     } else if (current_cpu == "mips64el") {
       # Place holder for mips64 support, not tested.
       abi_target = "mips64el-linux-androideabi"
     } else {
@@ skipping 115 matching lines @@
 
       # Avoid errors with current NDK:
       # "third_party/android_tools/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/include/arm_neon.h:3426:3: error: argument must be a constant"
       "-finstrument-functions-exclude-file-list=arm_neon.h",
     ]
   }
 }
 
 config("no_cygprofile_instrumentation") {
 }