[PlayBilling] Support knowing if running in AppStore TWA

In AndroidPaymentAppFinder#findAndroidPaymentApps, this CL adds a
support for it to know whether it is running in a TWA that is installed
from AppStore.

Bug: 1064740

Change-Id: I4e21787294f1e7a2e471f80b452ebdd0a9ab77e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2128831
Commit-Queue: Liquan (Max) Gu <maxlg@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Reviewed-by: Peter Conn <peconn@chromium.org>
Auto-Submit: Liquan (Max) Gu <maxlg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755848}

chrome/android/java/src/org/chromium/chrome/browser/browserservices/trustedwebactivityui/TrustedWebActivityCoordinator.java

@@ -187,4 +187,17 @@ public class TrustedWebActivityCoordinator implements InflationObserver {
             }
         }
     }
+
+    /** @return The package name of the Trusted Web Activity. */
+    public String getTwaPackage() {
+        return mClientPackageNameProvider.get();
+    }
+
+    /**
+     * @return Whether the app is running in the "Trusted Web Activity" mode, where the
+     *         TWA-specific UI is shown.
+     */
+    public boolean isInTwaMode() {
+        return mInTwaMode;
+    }
 }

chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabActivity.java

@@ -35,6 +35,7 @@ import org.chromium.chrome.browser.LaunchIntentDispatcher;
 import org.chromium.chrome.browser.autofill_assistant.AutofillAssistantFacade;
 import org.chromium.chrome.browser.browserservices.BrowserServicesIntentDataProvider;
 import org.chromium.chrome.browser.browserservices.BrowserServicesIntentDataProvider.CustomTabsUiType;
+import org.chromium.chrome.browser.browserservices.trustedwebactivityui.TrustedWebActivityCoordinator;
 import org.chromium.chrome.browser.customtabs.content.CustomTabActivityTabController;
 import org.chromium.chrome.browser.customtabs.content.CustomTabActivityTabProvider;
 import org.chromium.chrome.browser.customtabs.content.CustomTabIntentHandler.IntentIgnoringCriterion;
@@ -67,6 +68,7 @@ public class CustomTabActivity extends BaseCustomTabActivity<CustomTabActivityCo
     private CustomTabIntentDataProvider mIntentDataProvider;
     private CustomTabsSessionToken mSession;
     private CustomTabActivityTabController mTabController;
+    private TrustedWebActivityCoordinator mTwaCoordinator;
 
     private final CustomTabsConnection mConnection = CustomTabsConnection.getInstance();
 
@@ -382,9 +384,27 @@ public class CustomTabActivity extends BaseCustomTabActivity<CustomTabActivityCo
         component.resolveCustomTabIncognitoManager();
 
         if (mIntentDataProvider.isTrustedWebActivity()) {
-            component.resolveTrustedWebActivityCoordinator();
+            mTwaCoordinator = component.resolveTrustedWebActivityCoordinator();
         }
 
         return component;
     }
+
+    /**
+     * @return The package name of the Trusted Web Activity, if the activity is a TWA; null
+     * otherwise.
+     */
+    @Nullable
+    public String getTwaPackage() {
+        return mTwaCoordinator == null ? null : mTwaCoordinator.getTwaPackage();
+    }
+
+    /**
+     * @return Whether the app is running in the "Trusted Web Activity" mode, where the TWA-specific
+     *         UI is shown.
+     */
+    @Nullable
+    public Boolean isInTwaMode() {
+        return mTwaCoordinator == null ? false : mTwaCoordinator.isInTwaMode();
+    }
 }

chrome/android/java/src/org/chromium/chrome/browser/payments/AndroidPaymentAppFinder.java

@@ -15,6 +15,7 @@ import androidx.annotation.VisibleForTesting;
 
 import org.chromium.base.Log;
 import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.customtabs.CustomTabActivity;
 import org.chromium.chrome.browser.payments.PaymentManifestVerifier.ManifestVerifyCallback;
 import org.chromium.components.payments.MethodStrings;
 import org.chromium.components.payments.PaymentManifestDownloader;
@@ -41,6 +42,8 @@ import java.util.Set;
 public class AndroidPaymentAppFinder implements ManifestVerifyCallback {
     private static final String TAG = "PaymentAppFinder";
 
+    private static final String PLAY_STORE_PACKAGE_NAME = "com.android.vending";
+
     /** The maximum number of payment method manifests to download. */
     private static final int MAX_NUMBER_OF_MANIFESTS = 10;
 
@@ -76,6 +79,12 @@ public class AndroidPaymentAppFinder implements ManifestVerifyCallback {
     private final PaymentAppFactoryInterface mFactory;
     private final boolean mIsIncognito;
 
+    /**
+     * A map from an app-store app's package name to its billing method. All of the supported
+     * app-store billing method must insert an entry to this map.
+     */
+    private final Map<String, String> mAppStoreBillingMethodMap = new HashMap();
+
     /**
      * A mapping from an Android package name to the payment app with that package name. The apps
      * will be sent to the <code>PaymentAppFactoryDelegate</code> once all of their payment methods
@@ -160,6 +169,8 @@ public class AndroidPaymentAppFinder implements ManifestVerifyCallback {
 
         mIgnoredMethods.add(MethodStrings.GOOGLE_PLAY_BILLING);
 
+        mAppStoreBillingMethodMap.put(PLAY_STORE_PACKAGE_NAME, MethodStrings.GOOGLE_PLAY_BILLING);
+
         mDownloader = downloader;
         mWebDataService = webDataService;
         mParser = parser;
@@ -170,6 +181,21 @@ public class AndroidPaymentAppFinder implements ManifestVerifyCallback {
         mIsIncognito = activity != null && activity.getCurrentTabModel().isIncognito();
     }
 
+    private boolean isInTwaInstalledFromAppStore() {
+        ChromeActivity activity =
+                ChromeActivity.fromWebContents(mDelegate.getParams().getWebContents());
+        if (activity == null) return false;
+        if (!(activity instanceof CustomTabActivity)) return false;
+        CustomTabActivity customTabActivity = ((CustomTabActivity) activity);
+        if (!customTabActivity.isInTwaMode()) return false;
+        String twaPackageName = customTabActivity.getTwaPackage();
+        if (twaPackageName == null) return false;
+        String installerPackageName =
+                activity.getPackageManager().getInstallerPackageName(twaPackageName);
+        if (installerPackageName == null) return false;
+        return mAppStoreBillingMethodMap.keySet().contains(installerPackageName);
+    }
+
     /**
      * Finds and validates the installed android payment apps that support the payment method names
      * that the merchant is using.
@@ -213,6 +239,11 @@ public class AndroidPaymentAppFinder implements ManifestVerifyCallback {
             }
         }
 
+        if (isInTwaInstalledFromAppStore()) {
+            // TODO(crbug.com/1064740): the finder would special-case the TWA installed from App
+            // Store to return only the app-store app.
+        }
+
         // All URI methods for which manifests should be downloaded. For example, if merchant
         // supports "https://bobpay.com/personal" payment method, but user also has Alice Pay app
         // that has the default payment method name of "https://alicepay.com/webpay" that claims to