Add autotest private API to set ARC touch mode

This change adds an extension API to set touch mode in ARC, which will
be used in tast test.

Bug: b:147116837
Test: tast run DUT arc.Accessibility* (crrev/c/1999865)
Change-Id: I4bfdc11c5fec41e45207ceeffa0be0c985b172c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1997436
Commit-Queue: Hiroki Sato <hirokisato@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Yury Khmel <khmel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732244}

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

@@ -3921,6 +3921,28 @@ void AutotestPrivateStopTracingFunction::OnTracingComplete(
   base::Value value(*trace.get());
   Respond(OneArgument(base::Value::ToUniquePtrValue(std::move(value))));
 }
+
+///////////////////////////////////////////////////////////////////////////////
+// AutotestPrivateSetArcTouchModeFunction
+///////////////////////////////////////////////////////////////////////////////
+AutotestPrivateSetArcTouchModeFunction::
+    AutotestPrivateSetArcTouchModeFunction() = default;
+AutotestPrivateSetArcTouchModeFunction::
+    ~AutotestPrivateSetArcTouchModeFunction() = default;
+
+ExtensionFunction::ResponseAction
+AutotestPrivateSetArcTouchModeFunction::Run() {
+  std::unique_ptr<api::autotest_private::SetArcTouchMode::Params> params(
+      api::autotest_private::SetArcTouchMode::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params);
+  DVLOG(1) << "AutotestPrivateSetArcTouchModeFunction " << params->enabled;
+
+  if (!arc::SetTouchMode(params->enabled))
+    return RespondNow(Error("Could not send intent to ARC."));
+
+  return RespondNow(NoArguments());
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // AutotestPrivateAPI
 ///////////////////////////////////////////////////////////////////////////////

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

@@ -1137,6 +1137,17 @@ class AutotestPrivateStopTracingFunction : public ExtensionFunction {
   void OnTracingComplete(std::unique_ptr<std::string> trace);
 };
 
+class AutotestPrivateSetArcTouchModeFunction : public ExtensionFunction {
+ public:
+  AutotestPrivateSetArcTouchModeFunction();
+  DECLARE_EXTENSION_FUNCTION("autotestPrivate.setArcTouchMode",
+                             AUTOTESTPRIVATE_SETARCTOUCHMODE)
+
+ private:
+  ~AutotestPrivateSetArcTouchModeFunction() override;
+  ResponseAction Run() override;
+};
+
 template <>
 KeyedService*
 BrowserContextKeyedAPIFactory<AutotestPrivateAPI>::BuildServiceInstanceFor(

chrome/browser/ui/app_list/arc/arc_app_utils.cc

@@ -152,18 +152,8 @@ bool Launch(content::BrowserContext* context,
     return false;
   }
 
-  arc::mojom::IntentHelperInstance* intent_helper_instance =
-      GET_INTENT_HELPER_INSTANCE(SendBroadcast);
-  if (intent_helper_instance && IsMouseOrTouchEventFromFlags(event_flags)) {
-    base::DictionaryValue extras;
-    extras.SetBoolean("inTouchMode", IsMouseOrTouchEventFromFlags(event_flags));
-    std::string extras_string;
-    base::JSONWriter::Write(extras, &extras_string);
-    intent_helper_instance->SendBroadcast(
-        kSetInTouchModeIntent,
-        ArcIntentHelperBridge::kArcIntentHelperPackageName,
-        kIntentHelperClassName, extras_string);
-  }
+  if (IsMouseOrTouchEventFromFlags(event_flags))
+    SetTouchMode(IsMouseOrTouchEventFromFlags(event_flags));
 
   // Unthrottle the ARC instance before launching an ARC app. This is done
   // to minimize lag on an app launch.
@@ -438,6 +428,23 @@ void CloseTask(int task_id) {
   app_instance->CloseTask(task_id);
 }
 
+bool SetTouchMode(bool enable) {
+  arc::mojom::IntentHelperInstance* intent_helper_instance =
+      GET_INTENT_HELPER_INSTANCE(SendBroadcast);
+  if (!intent_helper_instance)
+    return false;
+
+  base::DictionaryValue extras;
+  extras.SetBoolean("inTouchMode", enable);
+  std::string extras_string;
+  base::JSONWriter::Write(extras, &extras_string);
+  intent_helper_instance->SendBroadcast(
+      kSetInTouchModeIntent, ArcIntentHelperBridge::kArcIntentHelperPackageName,
+      kIntentHelperClassName, extras_string);
+
+  return true;
+}
+
 std::vector<std::string> GetSelectedPackagesFromPrefs(
     content::BrowserContext* context) {
   std::vector<std::string> packages;

chrome/browser/ui/app_list/arc/arc_app_utils.h

@@ -148,6 +148,9 @@ void SetTaskActive(int task_id);
 // Closes the task.
 void CloseTask(int task_id);
 
+// Sets TouchMode in Android. Returns true if the intent was sent.
+bool SetTouchMode(bool enable);
+
 // Gets user selected package names.
 std::vector<std::string> GetSelectedPackagesFromPrefs(
     content::BrowserContext* context);

chrome/common/extensions/api/autotest_private.idl

@@ -897,6 +897,10 @@ namespace autotestPrivate {
     //     parameter.
     static void stopTracing(TraceCompleteCallback completeCallback);
 
+    // Sends ARC touch mode enabled or disabled.
+    // |enable|: whether enabled touch mode.
+    // |callback|: called when action performed.
+    static void setArcTouchMode(boolean enabled, VoidCallback callback);
   };
 
   interface Events {

extensions/browser/extension_function_histogram_value.h

@@ -1494,6 +1494,7 @@ enum HistogramValue {
   AUTOTESTPRIVATE_STOPTRACING = 1431,
   LOGIN_LOCKMANAGEDGUESTSESSION = 1432,
   LOGIN_UNLOCKMANAGEDGUESTSESSION = 1433,
+  AUTOTESTPRIVATE_SETARCTOUCHMODE = 1434,
   // Last entry: Add new entries above, then run:
   // python tools/metrics/histograms/update_extension_histograms.py
   ENUM_BOUNDARY

tools/metrics/histograms/enums.xml

@@ -21755,6 +21755,7 @@ to ensure that the crash string is shown properly on the user-facing crash UI.
   <int value="1431" label="AUTOTESTPRIVATE_STOPTRACING"/>
   <int value="1432" label="LOGIN_LOCKMANAGEDGUESTSESSION"/>
   <int value="1433" label="LOGIN_UNLOCKMANAGEDGUESTSESSION"/>
+  <int value="1434" label="AUTOTESTPRIVATE_SETARCTOUCHMODE"/>
 </enum>
 
 <enum name="ExtensionIconState">