Rename "install" -> "get" and "update" -> "upgrade".

sdk/lib/_internal/pub/test/get/path/path_is_file_test.dart

Index: sdk/lib/_internal/pub/test/get/path/path_is_file_test.dart
diff --git a/sdk/lib/_internal/pub/test/install/path/path_is_file_test.dart b/sdk/lib/_internal/pub/test/get/path/path_is_file_test.dart
similarity index 91%
rename from sdk/lib/_internal/pub/test/install/path/path_is_file_test.dart
rename to sdk/lib/_internal/pub/test/get/path/path_is_file_test.dart
index dc44cd792bb5638f4f96e7d71c3309f094089e9a..288f68ff67cb95a72c7924e74f0fd31b763d7666 100644
--- a/sdk/lib/_internal/pub/test/install/path/path_is_file_test.dart
+++ b/sdk/lib/_internal/pub/test/get/path/path_is_file_test.dart
@@ -24,7 +24,7 @@ main() {
       })
     ]).create();
 
-    pubInstall(error: "Path dependency for package 'foo' must refer to a "
+    pubGet(error: "Path dependency for package 'foo' must refer to a "
                       "directory, not a file. Was '$dummyPath'.");
   });
 }