Mojo: Move mojo/system/embedder to mojo/embedder.

mojo/mojo.gyp

Index: mojo/mojo.gyp
diff --git a/mojo/mojo.gyp b/mojo/mojo.gyp
index 48b51b58dfed914bc25cd2c259c28d4025e48ffe..d0ff90078b38e863a62059fb62e634d38d87f31d 100644
--- a/mojo/mojo.gyp
+++ b/mojo/mojo.gyp
@@ -103,6 +103,15 @@
         'MOJO_SYSTEM_IMPL_IMPLEMENTATION',
       ],
       'sources': [
+        'embedder/embedder.cc',
+        'embedder/embedder.h',
+        'embedder/platform_channel_pair.cc',
+        'embedder/platform_channel_pair.h',
+        'embedder/platform_channel_pair_posix.cc',
+        'embedder/platform_channel_pair_win.cc',
+        'embedder/platform_handle.cc',
+        'embedder/platform_handle.h',
+        'embedder/scoped_platform_handle.h',
         'system/channel.cc',
         'system/channel.h',
         'system/constants.h',
@@ -116,15 +125,6 @@
         'system/data_pipe_producer_dispatcher.h',
         'system/dispatcher.cc',
         'system/dispatcher.h',
-        'system/embedder/embedder.cc',
-        'system/embedder/embedder.h',
-        'system/embedder/platform_channel_pair.cc',
-        'system/embedder/platform_channel_pair.h',
-        'system/embedder/platform_channel_pair_posix.cc',
-        'system/embedder/platform_channel_pair_win.cc',
-        'system/embedder/platform_handle.cc',
-        'system/embedder/platform_handle.h',
-        'system/embedder/scoped_platform_handle.h',
         'system/local_data_pipe.cc',
         'system/local_data_pipe.h',
         'system/local_message_pipe_endpoint.cc',
@@ -157,8 +157,8 @@
         # TODO(vtl): It's a little unfortunate that these end up in the same
         # component as non-test-only code. In the static build, this code should
         # hopefully be dead-stripped.
-        'system/embedder/test_embedder.cc',
-        'system/embedder/test_embedder.h',
+        'embedder/test_embedder.cc',
+        'embedder/test_embedder.h',
       ],
     },
     {
@@ -172,12 +172,12 @@
         'mojo_system_impl',
       ],
       'sources': [
+        'embedder/embedder_unittest.cc',
         'system/core_impl_unittest.cc',
         'system/core_test_base.cc',
         'system/core_test_base.h',
         'system/data_pipe_unittest.cc',
         'system/dispatcher_unittest.cc',
-        'system/embedder/embedder_unittest.cc',
         'system/local_data_pipe_unittest.cc',
         'system/message_pipe_dispatcher_unittest.cc',
         'system/message_pipe_unittest.cc',