Enable debugging code for non-official Android builds.

build/common.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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 925 matching lines @@
 
         # Use the system icu.
         'use_system_icu%': 0,
 
         # TODO(yfriedman): Remove once unit_tests can link for Android.
         # To override it specify:
         # GYP_DEFINES="$GYP_DEFINES android_unit_test_target_type=executable"
         #     android_gyp
         'android_unit_test_target_type%': 'static_library',
 
-        # Choose static link by build type.
         'conditions': [
+          # Choose static link by build type.
           ['android_build_type==0', {
             'static_link_system_icu%': 1,
           }, {
             'static_link_system_icu%': 0,
           }],
         ],
         # TODO(steveblock): Investigate using the system versions of sqlite,
         # libjpeg, expat and stlport.
         # Enable to use system sqlite.
         'use_system_sqlite%': 0,  # '<(android_build_type)',
@@ skipping 918 matching lines @@
           }],
           ['OS=="linux"', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '<@(release_extra_cflags)',
                 ],
               }],
             ],
           }],
+          # Android enables DCHECK()s on non-Official release builds.
+          ['OS=="android" and buildtype!="Official"', {
+            'defines!': ['NDEBUG'],
+          }],
         ],
       },
       #
       # Concrete configurations
       #
       'Debug': {
         'inherit_from': ['Common_Base', 'x86_Base', 'Debug_Base'],
       },
       'Release': {
         'inherit_from': ['Common_Base', 'x86_Base', 'Release_Base'],
@@ skipping 1347 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }