Disable assistant for child account

Bug: b:112857091
Test: locally build and test
Change-Id: I9deac6849662a48263966b01012553046f5aa328
Reviewed-on: https://chromium-review.googlesource.com/1182448Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Sam McNally <sammc@chromium.org>
Commit-Queue: Xiaohui Chen <xiaohuic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584799}

ash/accelerators/accelerator_controller.cc

@@ -705,6 +705,7 @@ void HandleToggleVoiceInteraction(const ui::Accelerator& accelerator) {
     case mojom::AssistantAllowedState::DISALLOWED_BY_ARC_DISALLOWED:
     case mojom::AssistantAllowedState::DISALLOWED_BY_FLAG:
     case mojom::AssistantAllowedState::DISALLOWED_BY_SUPERVISED_USER:
+    case mojom::AssistantAllowedState::DISALLOWED_BY_CHILD_USER:
     case mojom::AssistantAllowedState::DISALLOWED_BY_INCOGNITO:
       // TODO(xiaohuic): show a specific toast.
       return;

ash/public/interfaces/voice_interaction_controller.mojom

@@ -39,6 +39,8 @@ enum AssistantAllowedState {
   DISALLOWED_BY_NONPRIMARY_USER,
   // Disallowed because current user is supervised user.
   DISALLOWED_BY_SUPERVISED_USER,
+  // Disallowed because current user is child user.
+  DISALLOWED_BY_CHILD_USER,
   // Disallowed because incognito mode.
   DISALLOWED_BY_INCOGNITO
 };

chrome/browser/chromeos/arc/arc_util.cc

@@ -608,6 +608,9 @@ ash::mojom::AssistantAllowedState IsAssistantAllowedForProfile(
   if (profile->IsLegacySupervised())
     return ash::mojom::AssistantAllowedState::DISALLOWED_BY_SUPERVISED_USER;
 
+  if (profile->IsChild())
+    return ash::mojom::AssistantAllowedState::DISALLOWED_BY_CHILD_USER;
+
   if (chromeos::switches::IsVoiceInteractionFlagsEnabled()) {
     if (!chromeos::switches::IsVoiceInteractionLocalesSupported())
       return ash::mojom::AssistantAllowedState::DISALLOWED_BY_LOCALE;

chrome/browser/chromeos/arc/arc_util_unittest.cc

@@ -27,6 +27,7 @@
 #include "chrome/browser/policy/profile_policy_connector.h"
 #include "chrome/browser/policy/profile_policy_connector_factory.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/supervised_user/supervised_user_constants.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chrome/test/base/testing_profile_manager.h"
@@ -585,6 +586,18 @@ TEST_F(ChromeArcUtilTest, IsAssistantAllowedForProfile_SupervisedUser) {
             IsAssistantAllowedForProfile(profile()));
 }
 
+TEST_F(ChromeArcUtilTest, IsAssistantAllowedForProfile_ChildUser) {
+  base::CommandLine::ForCurrentProcess()->InitFromArgv(
+      {"", "--arc-availability=officially-supported",
+       "--enable-voice-interaction"});
+  ScopedLogIn login(GetFakeUserManager(),
+                    AccountId::FromUserEmailGaiaId(
+                        profile()->GetProfileUserName(), kTestGaiaId));
+  profile()->SetSupervisedUserId(supervised_users::kChildAccountSUID);
+  EXPECT_EQ(ash::mojom::AssistantAllowedState::DISALLOWED_BY_CHILD_USER,
+            IsAssistantAllowedForProfile(profile()));
+}
+
 TEST_F(ChromeArcUtilTest, IsAssistantAllowedForProfile_Locale) {
   base::CommandLine::ForCurrentProcess()->InitFromArgv(
       {"", "--arc-availability=officially-supported",