Chrome-side patch for IsAppInstalled.

content/public/android/java/src/org/chromium/content/browser/ServiceRegistrar.java

Index: content/public/android/java/src/org/chromium/content/browser/ServiceRegistrar.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ServiceRegistrar.java b/content/public/android/java/src/org/chromium/content/browser/ServiceRegistrar.java
index e8c279eba71fe6d02ad850868bec051be71ac3e7..b311571dd65361dd34c0937c6d2ef8ad1478a4c4 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ServiceRegistrar.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ServiceRegistrar.java
@@ -9,8 +9,10 @@ import android.content.Context;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.content.browser.ServiceRegistry.ImplementationFactory;
+import org.chromium.content.browser.installedapp.InstalledAppProviderImpl;
 import org.chromium.device.battery.BatteryMonitorFactory;
 import org.chromium.device.vibration.VibrationManagerImpl;
+import org.chromium.mojom.content.InstalledAppProvider;
 import org.chromium.mojom.device.BatteryMonitor;
 import org.chromium.mojom.device.VibrationManager;
 
@@ -49,6 +51,20 @@ class ServiceRegistrar {
         }
     }
 
+    private static class InstalledAppProviderFactory
+            implements ImplementationFactory<InstalledAppProvider> {
+        private final Context mApplicationContext;
+
+        InstalledAppProviderFactory(Context applicationContext) {
+            mApplicationContext = applicationContext;
+        }
+
+        @Override
+        public InstalledAppProvider createImpl() {
+            return new InstalledAppProviderImpl(mApplicationContext);
+        }
+    }
+
     @CalledByNative
     static void registerProcessHostServices(ServiceRegistry registry, Context applicationContext) {
         assert applicationContext != null;
@@ -56,6 +72,8 @@ class ServiceRegistrar {
                 new BatteryMonitorImplementationFactory(applicationContext));
         registry.addService(VibrationManager.MANAGER,
                 new VibrationManagerImplementationFactory(applicationContext));
+        registry.addService(
+                InstalledAppProvider.MANAGER, new InstalledAppProviderFactory(applicationContext));
     }
 
     @CalledByNative