Move a bunch of child-only code from content/common to content/child

content/content_common.gypi

Index: content/content_common.gypi
diff --git a/content/content_common.gypi b/content/content_common.gypi
index 7a60b84df8c26e9dc9824b862898171b639f653b..70b4e09091c413a30e59553b30d97ac9926720cf 100644
--- a/content/content_common.gypi
+++ b/content/content_common.gypi
@@ -132,20 +132,12 @@
     'common/browser_rendering_stats.h',
     'common/cc_messages.cc',
     'common/cc_messages.h',
-    'common/child_histogram_message_filter.cc',
-    'common/child_histogram_message_filter.h',
-    'common/child_process.cc',
-    'common/child_process.h',
     'common/child_process_host_impl.cc',
     'common/child_process_host_impl.h',
     'common/child_process_messages.h',
     'common/child_process_sandbox_support_impl_linux.cc',
     'common/child_process_sandbox_support_impl_linux.h',
     'common/child_process_sandbox_support_impl_shm_linux.cc',
-    'common/child_resource_message_filter.cc',
-    'common/child_resource_message_filter.h',
-    'common/child_thread.cc',
-    'common/child_thread.h',
     'common/clipboard_messages.cc',
     'common/clipboard_messages.h',
     'common/content_constants_internal.cc',
@@ -159,8 +151,6 @@
     'common/content_param_traits_macros.h',
     'common/content_paths.cc',
     'common/database_messages.h',
-    'common/database_util.cc',
-    'common/database_util.h',
     'common/db_message_filter.cc',
     'common/db_message_filter.h',
     'common/desktop_notification_messages.h',
@@ -173,8 +163,6 @@
     'common/drag_traits.h',
     'common/edit_command.h',
     'common/file_utilities_messages.h',
-    'common/fileapi/file_system_dispatcher.cc',
-    'common/fileapi/file_system_dispatcher.h',
     'common/fileapi/file_system_messages.h',
     'common/fileapi/webblob_messages.h',
     'common/find_match_rect_android.cc',
@@ -302,12 +290,8 @@
     'common/plugin_process_messages.h',
     'common/process_type.cc',
     'common/quota_messages.h',
-    'common/quota_dispatcher.cc',
-    'common/quota_dispatcher.h',
     'common/request_extra_data.cc',
     'common/request_extra_data.h',
-    'common/resource_dispatcher.cc',
-    'common/resource_dispatcher.h',
     'common/resource_messages.cc',
     'common/resource_messages.h',
     'common/sandbox_init_mac.cc',
@@ -330,8 +314,6 @@
     'common/set_process_title_linux.cc',
     'common/set_process_title_linux.h',
     'common/socket_stream.h',
-    'common/socket_stream_dispatcher.cc',
-    'common/socket_stream_dispatcher.h',
     'common/socket_stream_handle_data.cc',
     'common/socket_stream_handle_data.h',
     'common/socket_stream_messages.h',
@@ -340,18 +322,12 @@
     'common/ssl_status_serialization.h',
     'common/swapped_out_messages.cc',
     'common/swapped_out_messages.h',
-    'common/thread_safe_sender.cc',
-    'common/thread_safe_sender.h',
     'common/text_input_client_messages.h',
     'common/url_schemes.cc',
     'common/url_schemes.h',
     'common/utility_messages.h',
     'common/view_messages.h',
     'common/view_message_enums.h',
-    'common/webkitplatformsupport_impl.cc',
-    'common/webkitplatformsupport_impl.h',
-    'common/webmessageportchannel_impl.cc',
-    'common/webmessageportchannel_impl.h',
     'common/worker_messages.h',
     'common/zygote_commands_linux.h',
     'port/common/input_event_ack_state.h',