Implementing app command to query EULA acceptance state for Chrome.

chrome/installer/setup/install_worker.h

Index: chrome/installer/setup/install_worker.h
diff --git a/chrome/installer/setup/install_worker.h b/chrome/installer/setup/install_worker.h
index a303b288dc58cd5d278bb72b8a9de7dd0c10c014..a9d59b3f8734789053475b7ba9b6d2294be34e0e 100644
--- a/chrome/installer/setup/install_worker.h
+++ b/chrome/installer/setup/install_worker.h
@@ -215,6 +215,16 @@ void AddOsUpgradeWorkItems(const InstallerState& installer_state,
                            const Product& product,
                            WorkItemList* install_list);
 
+// Adds work items to add or remove the "query-eula-acceptance" command to
+// |product|'s version key on the basis of the current operation (represented
+// in |installer_state|).  |new_version| is the version of the product(s)
+// currently being installed -- can be empty on uninstall.
+void AddQueryEULAAcceptanceWorkItems(const InstallerState& installer_state,
+                                     const FilePath& setup_path,
+                                     const Version& new_version,
+                                     const Product& product,
+                                     WorkItemList* work_item_list);
+
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_SETUP_INSTALL_WORKER_H_