[mojo] Delete third_party/mojo

ipc/mojo/BUILD.gn

Index: ipc/mojo/BUILD.gn
diff --git a/ipc/mojo/BUILD.gn b/ipc/mojo/BUILD.gn
index 29e3a9574205ecb91d1abb356f066de0db8205cc..cc83a83889d0f8514223a9359411612b8932e9d3 100644
--- a/ipc/mojo/BUILD.gn
+++ b/ipc/mojo/BUILD.gn
@@ -39,10 +39,10 @@ component("mojo") {
     "//base",
     "//base/third_party/dynamic_annotations",
     "//ipc",
+    "//mojo/edk/system",
     "//mojo/environment:chromium",
     "//mojo/public/c/environment:environment",
     "//mojo/public/cpp/bindings",
-    "//third_party/mojo/src/mojo/edk/system",
   ]
 }
 
@@ -61,9 +61,9 @@ test("ipc_mojo_unittests") {
     "//ipc",
     "//ipc:test_support",
     "//ipc/mojo",
+    "//mojo/edk/system",
     "//mojo/environment:chromium",
     "//testing/gtest",
-    "//third_party/mojo/src/mojo/edk/system",
     "//url",
   ]
 }
@@ -81,8 +81,8 @@ test("ipc_mojo_perftests") {
     "//ipc",
     "//ipc:test_support",
     "//ipc/mojo",
+    "//mojo/edk/system",
     "//mojo/environment:chromium",
-    "//third_party/mojo/src/mojo/edk/system",
     "//url",
   ]
 }