Make ppapi_unittests depend on liballocator if linux_use_tcmalloc==1

ppapi/ppapi_tests.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.
 
 {
   'targets': [
     {
       'target_name': 'ppapi_tests',
       'type': 'loadable_module',
       'include_dirs': [
@@ skipping 139 matching lines @@
         'proxy/ppb_var_unittest.cc',
         'proxy/ppp_instance_private_proxy_unittest.cc',
         'proxy/ppp_instance_proxy_unittest.cc',
         'proxy/ppp_messaging_proxy_unittest.cc',
         'proxy/printing_resource_unittest.cc',
         'proxy/serialized_var_unittest.cc',
         'shared_impl/resource_tracker_unittest.cc',
         'shared_impl/tracked_callback_unittest.cc',
         'shared_impl/var_tracker_unittest.cc',
       ],
+      'conditions': [
+        [ 'linux_use_tcmalloc==1', {
+            'dependencies': [
+              '../base/allocator/allocator.gyp:allocator',
+            ],
+        }],
+      ],
     },
     {
       'target_name': 'ppapi_example_skeleton',
       'suppress_wildcard': 1,
       'type': 'none',
       'direct_dependent_settings': {
         'product_name': '>(_target_name)',
         'conditions': [
           ['os_posix==1 and OS!="mac"', {
             'cflags': ['-fvisibility=hidden'],
@@ skipping 243 matching lines @@
       'dependencies': [
         'ppapi_example_skeleton',
         'ppapi.gyp:ppapi_cpp',
       ],
       'sources': [
         'examples/printing/printing.cc',
       ],
     },
   ],
 }