[CrOS Settings] Add delete DLC search tags.

Fixed: 1083021
Change-Id: Id73d266856482bffd2dd89584eb426fa6670d559
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2203270Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Regan Hsu <hsuregan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#770818}

chrome/app/os_settings_search_tag_strings.grdp

@@ -493,6 +493,18 @@
   <message name="IDS_OS_SETTINGS_TAG_DOWNLOADED_CONTENT_ALT1" desc="Text for search result item which, when clicked, navigates the user to downloaded content. Alternate phrase for: 'Downloaded Content'">
     DLC
   </message>
+  <message name="IDS_OS_SETTINGS_TAG_REMOVE_DOWNLOADED_CONTENT" desc="Text for search result item which, when clicked, navigates the user to downloaded content subpage where they can choose to delete a DLC from the device. Alternate phrase for: 'Delete Downloaded Content', 'Remove DLC', 'Delete DLC'">
+    Remove Downloaded Content
+  </message>
+  <message name="IDS_OS_SETTINGS_TAG_REMOVE_DOWNLOADED_CONTENT_ALT1" desc="Text for search result item which, when clicked, navigates the user to downloaded content subpage where they can choose to delete a DLC from the device. Alternate phrase for: 'Delete Downloaded Content', 'Remove Downloaded Content', 'Delete DLC'">
+    Remove DLC
+  </message>
+  <message name="IDS_OS_SETTINGS_TAG_REMOVE_DOWNLOADED_CONTENT_ALT2" desc="Text for search result item which, when clicked, navigates the user to downloaded content subpage where they can choose to delete a DLC from the device. Alternate phrase for: 'Remove Downloaded Content', 'Remove DLC', 'Delete DLC'">
+    Delete Downloaded Content
+  </message>
+  <message name="IDS_OS_SETTINGS_TAG_REMOVE_DOWNLOADED_CONTENT_ALT3" desc="Text for search result item which, when clicked, navigates the user to downloaded content subpage where they can choose to delete a DLC from the device. Alternate phrase for: 'Delete Downloaded Content', 'Remove DLC', 'Remove Downloaded Content'">
+    Delete DLC
+  </message>
   <message name="IDS_OS_SETTINGS_TAG_EXTERNAL_STORAGE" desc="Text for search result item which, when clicked, navigates the user to external storage preferences.">
     External storage preferences
   </message>

chrome/browser/ui/webui/settings/chromeos/constants/setting.mojom

@@ -96,6 +96,7 @@ enum Setting {
   kSleepWhenLaptopLidClosed = 424,
   kDisplayResolution = 425,
   kDisplayRefreshRate = 426,
+  kRemoveDlc = 427,
 
   // Personalization section.
   kOpenWallpaper = 500,

chrome/browser/ui/webui/settings/chromeos/device_section.cc

@@ -379,6 +379,16 @@ const std::vector<SearchConcept>& GetDlcSearchConcepts() {
        {.subpage = mojom::Subpage::kDlc},
        {IDS_OS_SETTINGS_TAG_DOWNLOADED_CONTENT_ALT1,
         SearchConcept::kAltTagEnd}},
+      {IDS_OS_SETTINGS_TAG_REMOVE_DOWNLOADED_CONTENT,
+       mojom::kDlcSubpagePath,
+       mojom::SearchResultIcon::kHardDrive,
+       mojom::SearchResultDefaultRank::kLow,
+       mojom::SearchResultType::kSetting,
+       {.setting = mojom::Setting::kRemoveDlc},
+       {IDS_OS_SETTINGS_TAG_REMOVE_DOWNLOADED_CONTENT_ALT1,
+        IDS_OS_SETTINGS_TAG_REMOVE_DOWNLOADED_CONTENT_ALT2,
+        IDS_OS_SETTINGS_TAG_REMOVE_DOWNLOADED_CONTENT_ALT3,
+        SearchConcept::kAltTagEnd}},
   });
   return *tags;
 }
@@ -897,6 +907,8 @@ void DeviceSection::RegisterHierarchy(HierarchyGenerator* generator) const {
   generator->RegisterNestedSubpage(IDS_SETTINGS_DLC_SUBPAGE_TITLE,
                                    mojom::Subpage::kDlc,
                                    mojom::Subpage::kStorage);
+  generator->RegisterNestedSetting(mojom::Setting::kRemoveDlc,
+                                   mojom::Subpage::kDlc);
 
   // Power.
   generator->RegisterTopLevelSubpage(IDS_SETTINGS_POWER_TITLE,