Revert of Straightens outs DEPS in mojo/common

mojo/application/public/cpp/BUILD.gn

Index: mojo/application/public/cpp/BUILD.gn
diff --git a/mojo/application/public/cpp/BUILD.gn b/mojo/application/public/cpp/BUILD.gn
index 01813221f0033e63b404ea7a25b7552f6bbe1a9a..635169164a9fcab7c2e8cfc3302d1acc9bec90d9 100644
--- a/mojo/application/public/cpp/BUILD.gn
+++ b/mojo/application/public/cpp/BUILD.gn
@@ -48,7 +48,6 @@
     "//mojo/application/public/interfaces",
     "//mojo/common",
     "//mojo/environment:chromium",
-    "//mojo/message_pump",
     "//third_party/mojo/src/mojo/public/cpp/bindings",
     "//third_party/mojo/src/mojo/public/cpp/system",
   ]
@@ -71,7 +70,9 @@
     # TODO: this code should not depend on base.
     "//base",
     "//mojo/application/public/interfaces:interfaces_cpp_sources",
-    "//mojo/message_pump",
+
+    # TODO: this code should not depend on mojo/common.
+    "//mojo/common:common_base",
     "//mojo/services/network/public/interfaces",
   ]
 }