Shorten gyp target names for PNaCl IRT shim

ppapi/ppapi_nacl.gyp

Index: ppapi/ppapi_nacl.gyp
diff --git a/ppapi/ppapi_nacl.gyp b/ppapi/ppapi_nacl.gyp
index 60ce912a4895d09134174664cbe3adb02fba3f56..850771989d34f29cb47429900a23ba5795682d76 100644
--- a/ppapi/ppapi_nacl.gyp
+++ b/ppapi/ppapi_nacl.gyp
@@ -187,7 +187,7 @@
           },
           # Shim is a dependency for the nexe because we pre-translate.
           'dependencies': [
-            '<(DEPTH)/ppapi/native_client/src/untrusted/pnacl_irt_shim/pnacl_irt_shim.gyp:shim_aot',
+            '<(DEPTH)/ppapi/native_client/src/untrusted/pnacl_irt_shim/pnacl_irt_shim.gyp:aot',
           ],
           'actions': [
             {
@@ -236,7 +236,7 @@
           },
           # Shim is a dependency for the nexe because we pre-translate.
           'dependencies': [
-            '<(DEPTH)/ppapi/native_client/src/untrusted/pnacl_irt_shim/pnacl_irt_shim.gyp:shim_aot',
+            '<(DEPTH)/ppapi/native_client/src/untrusted/pnacl_irt_shim/pnacl_irt_shim.gyp:aot',
           ],
           'actions': [
             {
@@ -260,7 +260,7 @@
           },
           # Shim is a dependency for the nexe because we pre-translate.
           'dependencies': [
-            '<(DEPTH)/ppapi/native_client/src/untrusted/pnacl_irt_shim/pnacl_irt_shim.gyp:shim_aot',
+            '<(DEPTH)/ppapi/native_client/src/untrusted/pnacl_irt_shim/pnacl_irt_shim.gyp:aot',
           ],
           'actions': [
             {