Tast: Add a new autotest private API

This change adds a new autotest API: isArcPackageListInitialRefreshed,
to check whether the ARC package list has been refreshed.

Bug: 982538
Test: Run the tast testcase added in
Change-Id: I1b9633be08098c9dcb23609fdc0332d09d1f545b
https: //chrome-internal-review.googlesource.com/c/chromeos/platform/tast-tests-private/+/1948653
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1981249Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Commit-Queue: Yue Li <updowndota@chromium.org>
Cr-Commit-Position: refs/heads/master@{#729710}

chrome/browser/chromeos/extensions/autotest_private/autotest_private_api.cc

@@ -2502,6 +2502,27 @@ void AutotestPrivateWaitForAssistantQueryStatusFunction::Timeout() {
   Respond(Error("No query response received before time out."));
 }
 
+///////////////////////////////////////////////////////////////////////////////
+// AutotestPrivateIsArcPackageListInitialRefreshedFunction
+///////////////////////////////////////////////////////////////////////////////
+
+AutotestPrivateIsArcPackageListInitialRefreshedFunction::
+    AutotestPrivateIsArcPackageListInitialRefreshedFunction() = default;
+
+AutotestPrivateIsArcPackageListInitialRefreshedFunction::
+    ~AutotestPrivateIsArcPackageListInitialRefreshedFunction() = default;
+
+ExtensionFunction::ResponseAction
+AutotestPrivateIsArcPackageListInitialRefreshedFunction::Run() {
+  DVLOG(1) << "AutotestPrivateIsArcPackageListInitialRefreshedFunction";
+
+  ArcAppListPrefs* const prefs =
+      ArcAppListPrefs::Get(Profile::FromBrowserContext(browser_context()));
+
+  return RespondNow(OneArgument(
+      std::make_unique<base::Value>(prefs->package_list_initial_refreshed())));
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // AutotestPrivateSetWhitelistedPrefFunction
 ///////////////////////////////////////////////////////////////////////////////

chrome/browser/chromeos/extensions/autotest_private/autotest_private_api.h

@@ -643,6 +643,18 @@ class AutotestPrivateWaitForAssistantQueryStatusFunction
   base::OneShotTimer timeout_timer_;
 };
 
+class AutotestPrivateIsArcPackageListInitialRefreshedFunction
+    : public ExtensionFunction {
+ public:
+  AutotestPrivateIsArcPackageListInitialRefreshedFunction();
+  DECLARE_EXTENSION_FUNCTION("autotestPrivate.isArcPackageListInitialRefreshed",
+                             AUTOTESTPRIVATE_ISARCPACKAGELISTINITIALREFRESHED)
+
+ private:
+  ~AutotestPrivateIsArcPackageListInitialRefreshedFunction() override;
+  ResponseAction Run() override;
+};
+
 // Set user pref value in the pref tree.
 class AutotestPrivateSetWhitelistedPrefFunction : public ExtensionFunction {
  public:

chrome/common/extensions/api/autotest_private.idl

@@ -239,6 +239,8 @@ namespace autotestPrivate {
 
   callback IsArcProvisionedCallback = void (boolean arcProvisioned);
 
+  callback IsArcPackageListInitialRefreshedCallback = void (boolean refreshed);
+
   dictionary ArcAppDict {
     DOMString name;
     DOMString packageName;
@@ -662,6 +664,11 @@ namespace autotestPrivate {
         long timeout_s,
         AssistantQueryStatusCallback callback);
 
+    // Whether the local list of installed ARC packages has been refreshed for
+    // the first time after user login.
+    static void isArcPackageListInitialRefreshed(
+        IsArcPackageListInitialRefreshedCallback callback);
+
     // Set value for the specified user pref in the pref tree.
     static void setWhitelistedPref(DOMString pref_name, any value,
                                    VoidCallback callback);

extensions/browser/extension_function_histogram_value.h

@@ -1489,6 +1489,7 @@ enum HistogramValue {
   WEBCAMPRIVATE_SET_HOME = 1426,
   INPUTMETHODPRIVATE_RESET = 1427,
   PRINTING_GETPRINTERINFO = 1428,
+  AUTOTESTPRIVATE_ISARCPACKAGELISTINITIALREFRESHED = 1429,
   // Last entry: Add new entries above, then run:
   // python tools/metrics/histograms/update_extension_histograms.py
   ENUM_BOUNDARY

tools/metrics/histograms/enums.xml

@@ -21710,6 +21710,7 @@ to ensure that the crash string is shown properly on the user-facing crash UI.
   <int value="1426" label="WEBCAMPRIVATE_SET_HOME"/>
   <int value="1427" label="INPUTMETHODPRIVATE_RESET"/>
   <int value="1428" label="PRINTING_GETPRINTERINFO"/>
+  <int value="1429" label="AUTOTESTPRIVATE_ISARCPACKAGELISTINITIALREFRESHED"/>
 </enum>
 
 <enum name="ExtensionIconState">