Add _android files for building DartVM on Android

runtime/vm/vm_sources.gypi

 # Copyright (c) 2012, 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.
 
 # This file contains all sources (vm and tests) for the dart virtual machine.
 # Unit test files need to have a '_test' suffix appended to the name.
 {
   'sources': [
     'allocation.cc',
     'allocation.h',
@@ skipping 88 matching lines @@
     'debugger_api_impl_test.cc',
     'deopt_instructions.cc',
     'deopt_instructions.h',
     'disassembler.cc',
     'disassembler.h',
     'disassembler_ia32.cc',
     'disassembler_x64.cc',
     'disassembler_arm.cc',
     'disassembler_test.cc',
     'debuginfo.h',
+    'debuginfo_android.cc',
     'debuginfo_linux.cc',
     'debuginfo_macos.cc',
     'debuginfo_win.cc',
     'double_conversion.cc',
     'double_conversion.h',
     'exceptions.cc',
     'exceptions.h',
     'exceptions_test.cc',
     'find_code_object_test.cc',
     'flags.cc',
@@ skipping 13 matching lines @@
     'flow_graph_compiler_x64.h',
     'flow_graph_optimizer.cc',
     'flow_graph_optimizer.h',
     'freelist.cc',
     'freelist.h',
     'freelist_test.cc',
     'gc_marker.cc',
     'gc_marker.h',
     'gc_sweeper.cc',
     'gc_sweeper.h',
+    'gdbjit_android.cc',
+    'gdbjit_android.h',
     'gdbjit_linux.cc',
     'gdbjit_linux.h',
     'globals.h',
     'growable_array.h',
     'growable_array_test.cc',
     'handles.cc',
     'handles.h',
     'handles_impl.h',
     'handles_test.cc',
     'hash_set.h',
@@ skipping 50 matching lines @@
     'native_message_handler.h',
     'object.cc',
     'object.h',
     'object_test.cc',
     'object_arm_test.cc',
     'object_ia32_test.cc',
     'object_x64_test.cc',
     'object_store.cc',
     'object_store.h',
     'object_store_test.cc',
+    'os_android.cc',
     'os_linux.cc',
     'os_macos.cc',
     'os_win.cc',
     'os.h',
     'os_test.cc',
     'parser.cc',
     'parser.h',
     'parser_test.cc',
     'pages.cc',
     'pages.h',
@@ skipping 54 matching lines @@
     'token.h',
     'unicode.cc',
     'unicode.h',
     'unicode_data.cc',
     'unicode_test.cc',
     'unit_test.cc',
     'unit_test.h',
     'utils_test.cc',
     'virtual_memory.cc',
     'virtual_memory.h',
+    'virtual_memory_android.cc',
     'virtual_memory_linux.cc',
     'virtual_memory_macos.cc',
     'virtual_memory_test.cc',
     'virtual_memory_win.cc',
     'verifier.cc',
     'verifier.h',
     'visitor.h',
     'zone.cc',
     'zone.h',
     'zone_test.cc',
   ],
 }