[Sync] Create new top-level sync/ directory

Move sync .proto files to sync/protocol.  Update all references.

This begins the Great Sync Migration.

BUG=117585,43624
TEST=

Review URL: https://chromiumcodereview.appspot.com/9668028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@125967 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/DEPS b/chrome/browser/DEPS
index 5233c12..53469078 100644
--- a/chrome/browser/DEPS
+++ b/chrome/browser/DEPS
@@ -18,6 +18,7 @@
   "+sandbox/src",  # The path doesn't say it, but this is the Windows sandbox.
   "+skia/ext",
   "+skia/include",
+  "+sync/protocol",  # Sync protobuf files.
   "+third_party/cros",
   "+third_party/cros_system_api",
   "+webkit/database",