Fix Clank+Dart compilation.

runtime/tools/gyp/runtime_configurations_android.gypi

+# Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+# Definitions for building Chrome with Dart on Android.
+# This is mostly excerpted from:
+# http://src.chromium.org/viewvc/chrome/trunk/src/build/common.gypi
+
+{
+  'target_defaults': {
+    'cflags': [
+      '-Wno-abi',
+      '-Wall',
+      '-W',
+      '-Wno-unused-parameter',
+      '-Wnon-virtual-dtor',
+      '-fno-rtti',
+      '-fno-exceptions',
+    ],
+    'target_conditions': [
+      ['_toolset=="target"', {
+        'cflags!': [
+          '-pthread',  # Not supported by Android toolchain.
+        ],
+        'cflags': [
+          '-U__linux__',  # Don't allow toolchain to claim -D__linux__
+          '-ffunction-sections',
+          '-funwind-tables',
+          '-fstack-protector',
+          '-fno-short-enums',
+          '-finline-limit=64',
+          '-Wa,--noexecstack',
+        ],
+        'defines': [
+          'ANDROID',
+          'USE_STLPORT=1',
+          '_STLP_USE_PTR_SPECIALIZATIONS=1',
+          '_STLP_NO_CSTD_FUNCTION_IMPORTS=1',
+          'HAVE_OFF64_T',
+          'HAVE_SYS_UIO_H',
+        ],
+        'ldflags!': [
+          '-pthread',  # Not supported by Android toolchain.
+        ],
+        'ldflags': [
+          '-nostdlib',
+          '-Wl,--no-undefined',
+          # Don't export symbols from statically linked libraries.
+          '-Wl,--exclude-libs=ALL',
+        ],
+      }],  # _toolset=="target"
+    ],  # target_conditions
+  },  # target_defaults
+}