Add UMA histograms and logging for bad IPC message handling

extensions/extensions.gypi

 # Copyright 2015 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': {
     'extensions_common_constants_sources': [
       'common/constants.cc',
       'common/constants.h',
     ],
@@ skipping 502 matching lines @@
       'browser/app_window/app_window_client.h',
       'browser/app_window/app_window_contents.cc',
       'browser/app_window/app_window_contents.h',
       'browser/app_window/app_window_geometry_cache.cc',
       'browser/app_window/app_window_geometry_cache.h',
       'browser/app_window/app_window_registry.cc',
       'browser/app_window/app_window_registry.h',
       'browser/app_window/native_app_window.h',
       'browser/app_window/size_constraints.cc',
       'browser/app_window/size_constraints.h',
+      'browser/bad_message.cc',
+      'browser/bad_message.h',
       'browser/blacklist_state.h',
       'browser/blob_holder.cc',
       'browser/blob_holder.h',
       'browser/browser_context_keyed_api_factory.h',
       'browser/browser_context_keyed_service_factories.cc',
       'browser/browser_context_keyed_service_factories.h',
       'browser/component_extension_resource_manager.h',
       'browser/computed_hashes.cc',
       'browser/computed_hashes.h',
       'browser/content_hash_fetcher.cc',
@@ skipping 490 matching lines @@
       'test/result_catcher.h',
       'test/test_content_utility_client.cc',
       'test/test_content_utility_client.h',
       'test/test_extensions_client.cc',
       'test/test_extensions_client.h',
       'test/test_permission_message_provider.cc',
       'test/test_permission_message_provider.h',
     ],
   },
 }