Change crash keys to be registered with a maximum length instead of number of chunks.

chrome/chrome_tests_unit.gypi

 # Copyright 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': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 2299 matching lines @@
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'app/breakpad_field_trial_win.cc',
         'app/breakpad_win.cc',
         'app/breakpad_unittest_win.cc',
         'app/crash_analysis_win.cc',
         'app/hard_error_handler_win.cc',
-        'app/run_all_unittests.cc'
+        'app/run_all_unittests.cc',
+        'common/crash_keys.cc',
+        'common/crash_keys.h',
       ],
       'conditions': [
         ['OS=="mac"', {
           # TODO(mark): We really want this for all non-static library targets,
           # but when we tried to pull it up to the common.gypi level, it broke
           # other things like the ui, startup, and page_cycler tests. *shrug*
           'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
         }],
         ['OS=="win"', {
           'dependencies': [
@@ skipping 64 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/unit_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }