[Offline Pages] Added OfflinePageEvaluationBridge for testing.

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 881d1a442a49c0cfc79fa9b23009da99397878d7..3fc35faf34b4cbb1d64503636a7de842898e0864 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -3355,6 +3355,14 @@ split_static_library("browser") {
         "supervised_user/child_accounts/child_account_service_android.h",
       ]
     }
+
+    # Used for testing only, should not be shipped to end users.
+    if (!is_official_build) {
+      sources += [
+        "android/offline_pages/evaluation/offline_page_evaluation_bridge.cc",
+        "android/offline_pages/evaluation/offline_page_evaluation_bridge.h",
+      ]
+    }
   }
 
   if (enable_vr_shell && android_java_ui) {
@@ -3906,6 +3914,11 @@ if (android_java_ui) {
       "../android/java/src/org/chromium/chrome/browser/webapps/WebApkUpdateManager.java",
       "../android/java/src/org/chromium/chrome/browser/webapps/WebappRegistry.java",
     ]
+
+    # Used for testing only, should not be shipped to end users.
+    if (!is_official_build) {
+      sources += [ "../android/java/src/org/chromium/chrome/browser/offlinepages/evaluation/OfflinePageEvaluationBridge.java" ]
+    }
     jni_package = "chrome"
   }