Hook up LeakCanary to ChromePublic.apk (behind a GN arg)

chrome/chrome.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 571 matching lines @@
             '../third_party/android_protobuf/android_protobuf.gyp:protobuf_nano_javalib',
             '../third_party/android_swipe_refresh/android_swipe_refresh.gyp:android_swipe_refresh_java',
             '../third_party/android_tools/android_tools.gyp:android_support_v7_appcompat_javalib',
             '../third_party/android_tools/android_tools.gyp:android_support_v7_mediarouter_javalib',
             '../third_party/android_tools/android_tools.gyp:android_support_v7_recyclerview_javalib',
             '../third_party/android_tools/android_tools.gyp:android_support_v13_javalib',
             '../third_party/android_tools/android_tools.gyp:google_play_services_javalib',
             '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation_javalib',
             '../third_party/gif_player/gif_player.gyp:gif_player_java',
             '../third_party/jsr-305/jsr-305.gyp:jsr_305_javalib',
+            '../third_party/leakcanary/leakcanary.gyp:leakcanary_java',
             '../ui/android/ui_android.gyp:ui_java',
           ],
           'variables': {
             'variables': {
               'android_branding_res_dirs%': ['<(java_in_dir)/res_chromium'],
             },
             'java_in_dir': '../chrome/android/java',
             'has_java_resources': 1,
             'R_package': 'org.chromium.chrome',
             'R_package_relpath': 'org/chromium/chrome',
@@ skipping 191 matching lines @@
                 # expired. crbug.com/577698
                 '../components/components.gyp:startup_metric_utils_common',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }