Reapplies all the IPC system work (reverts the revert r56272).

chrome/chrome_common.gypi

Index: chrome/chrome_common.gypi
diff --git a/chrome/chrome_common.gypi b/chrome/chrome_common.gypi
index 68d1414b72283e769ab378d8368ad2c516f2c347..3c6eb5aa6f84a343edc4613f5fb8a2413afef38d 100644
--- a/chrome/chrome_common.gypi
+++ b/chrome/chrome_common.gypi
@@ -49,6 +49,7 @@
           'common/content_settings_types.h',
           'common/debug_flags.cc',
           'common/debug_flags.h',
+          'common/devtools_messages.cc',
           'common/devtools_messages.h',
           'common/devtools_messages_internal.h',
           'common/font_descriptor_mac.h',
@@ -57,6 +58,7 @@
           'common/geoposition.h',
           'common/gpu_info.h',
           'common/gpu_info.cc',
+          'common/gpu_messages.cc',
           'common/gpu_messages.h',
           'common/gpu_messages_internal.h',
           'common/gpu_video_common.cc',
@@ -72,9 +74,10 @@
           'common/metrics_helpers.h',
           'common/nacl_cmd_line.cc',
           'common/nacl_cmd_line.h',
+          'common/nacl_messages.cc',
           'common/nacl_messages.h',
-          'common/nacl_types.h',
           'common/nacl_messages_internal.h',
+          'common/nacl_types.h',
           'common/notification_details.cc',
           'common/notification_details.h',
           'common/notification_observer.h',
@@ -248,8 +251,10 @@
         'common/pepper_plugin_registry.h',
         'common/plugin_carbon_interpose_constants_mac.h',
         'common/plugin_carbon_interpose_constants_mac.cc',
+        'common/plugin_messages.cc',
         'common/plugin_messages.h',
         'common/plugin_messages_internal.h',
+        'common/render_messages.cc',
         'common/render_messages.h',
         'common/render_messages_internal.h',
         'common/renderer_preferences.h',
@@ -257,11 +262,12 @@
         'common/resource_dispatcher.h',
         'common/security_filter_peer.cc',
         'common/security_filter_peer.h',
+        'common/service_messages.cc',
         'common/service_messages.h',
         'common/services_messages_internal.h',
-	'common/service_process_type.h',
-	'common/service_process_util.cc',
-	'common/service_process_util.h',
+        'common/service_process_type.h',
+        'common/service_process_util.cc',
+        'common/service_process_util.h',
         'common/socket_stream_dispatcher.cc',
         'common/socket_stream_dispatcher.h',
         'common/spellcheck_common.cc',
@@ -274,6 +280,7 @@
         'common/thumbnail_score.h',
         'common/url_constants.cc',
         'common/url_constants.h',
+        'common/utility_messages.cc',
         'common/utility_messages.h',
         'common/utility_messages_internal.h',
         'common/view_types.cc',
@@ -282,11 +289,13 @@
         'common/visitedlink_common.h',
         'common/web_database_observer_impl.cc',
         'common/web_database_observer_impl.h',
+        'common/webkit_param_traits.cc',
         'common/webkit_param_traits.h',
         'common/webmessageportchannel_impl.cc',
         'common/webmessageportchannel_impl.h',
         'common/window_container_type.cc',
         'common/window_container_type.h',
+        'common/worker_messages.cc',
         'common/worker_messages.h',
         'common/worker_messages_internal.h',
         'common/worker_thread_ticker.cc',