Pass the DLC UUID to mantis service

Also add kMediaAppImageMantisModel flag to load time data so Backlight can decide which UUID to use

BUG=b:396577011
TEST=manual e2e test

Change-Id: Ifcc5cf1bf521de1e6f47028d8cda77f1b00b3d17
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6284865
Reviewed-by: Patti Lor <patricialor@chromium.org>
Commit-Queue: Nurlita Dhuha Fatmawati <nurlitadf@google.com>
Reviewed-by: Yi Chou <yich@google.com>
Cr-Commit-Position: refs/heads/main@{#1424300}

ash/webui/media_app_ui/resources/js/media_app.d.ts

@@ -35,6 +35,8 @@ type InitializeResult =
 type MantisResult = import('./mantis_processor.mojom-webui.js').MantisResult;
 type MantisSafetyClassifierVerdict =
     import('./mantis_processor.mojom-webui.js').SafetyClassifierVerdict;
+type Uuid =
+    import('//resources/mojo/mojo/public/mojom/base/uuid.mojom-webui.js').Uuid;
 
 /**
  * Wraps an HTML File object (or a mock, or media loaded through another means).
@@ -304,7 +306,7 @@ declare interface ClientApiDelegate {
    * Loads Mantis' assets from DLC and initializes the processor for subsequent
    * queries.
    */
-  initializeMantis(): Promise<InitializeResult>;
+  initializeMantis(dlcId: Uuid): Promise<InitializeResult>;
   /**
    * Performs image segmentation on the image based on the prior selection.
    * The `image` and `selection` are byte arrays containing the encoded

ash/webui/media_app_ui/resources/js/receiver.ts

@@ -7,6 +7,7 @@
 import './sandboxed_load_time_data.js';
 
 import {COLOR_PROVIDER_CHANGED, ColorChangeUpdater} from '//resources/cr_components/color_change_listener/colors_css_updater.js';
+import {Uuid} from '//resources/mojo/mojo/public/mojom/base/uuid.mojom-webui.js';
 import type {RectF} from '//resources/mojo/ui/gfx/geometry/mojom/geometry.mojom-webui.js';
 import type {Url as MojoUrl} from '//resources/mojo/url/mojom/url.mojom-webui.js';
 import {assertCast, MessagePipe} from '//system_apps/message_pipe.js';
@@ -443,12 +444,9 @@ const DELEGATE: ClientApiDelegate = {
   async isMantisAvailable() {
     return isMantisAvailable();
   },
-  async initializeMantis() {
+  async initializeMantis(dlcId: Uuid) {
     mantisUntrustedService?.$.close();
-    // TODO(crbug.com/395511579): Make the dlcUuid a parameter of
-    // initializeMantis.
-    const dlcUuid = null;
-    const response = await connectToMantisUntrustedService(dlcUuid);
+    const response = await connectToMantisUntrustedService(dlcId);
     if (response.error) {
       return response.error;
     }

chrome/browser/ash/system_web_apps/apps/media_app/media_app_guest_ui_config.cc

@@ -122,6 +122,9 @@ void ChromeMediaAppGuestUIDelegate::PopulateLoadTimeData(
   source->AddBoolean("flagsMenu", channel != version_info::Channel::BETA &&
                                       channel != version_info::Channel::STABLE);
   source->AddBoolean("isDevChannel", channel == version_info::Channel::DEV);
+  source->AddString("mantisModel",
+                    ash::features::kMediaAppImageMantisModelParams.GetName(
+                        ash::features::kMediaAppImageMantisModelParams.Get()));
 }
 
 std::unique_ptr<specialized_features::FeatureAccessChecker>