Compile specific parts of the Android build with -O2.

base/base.gypi

 # Copyright (c) 2012 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
       'base_i18n_target': 0,
     },
+    'configurations': {
+      'Release': {
+        'conditions': [
+          ['OS=="android"', {
+            'cflags!': ['-Os'],
+            'cflags': ['-O2'],
+          }],
+        ],
+      },
+    },
     'target_conditions': [
       # This part is shared between the targets defined below.
       ['base_target==1', {
         'sources': [
           '../build/build_config.h',
           'third_party/dmg_fp/dmg_fp.h',
           'third_party/dmg_fp/g_fmt.cc',
           'third_party/dmg_fp/dtoa_wrapper.cc',
           'third_party/icu/icu_utf.cc',
           'third_party/icu/icu_utf.h',
@@ skipping 976 matching lines @@
           'i18n/time_formatting.h',
           'i18n/timezone.cc',
           'i18n/timezone.h',
           'i18n/utf8_validator_tables.cc',
           'i18n/utf8_validator_tables.h',
         ],
       }]
     ],
   },
 }