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chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
index b73fc416d8e6d1a06968dc2a2f29075eb7b6b524..ee460eb457ef759bd0ef36d42e2d674a56eb6245 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
@@ -11,10 +11,12 @@ import android.os.StrictMode;
 import android.provider.Settings;
 import android.support.v7.app.AlertDialog;
 
+import org.chromium.base.Callback;
 import org.chromium.base.ContextUtils;
 import org.chromium.base.Log;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ChromeApplication;
 import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.ChromeVersionInfo;
 import org.chromium.chrome.browser.preferences.ChromePreferenceManager;
@@ -22,12 +24,16 @@ import org.chromium.webapk.lib.client.WebApkValidator;
 
 /**
  * Contains functionality needed for Chrome to host WebAPKs.
+ * This Java object is created by and owned by the native ChromeWebApkHost.
  */
 public class ChromeWebApkHost {
     private static final String TAG = "ChromeWebApkHost";
 
     private static Boolean sEnabledForTesting;
 
+    /** Weak pointer to the native ChromeWebApkHost. */
+    private long mNativePointer;
+
     public static void init() {
         WebApkValidator.initWithBrowserHostSignature(ChromeWebApkHostSignature.EXPECTED_SIGNATURE);
     }
@@ -63,6 +69,43 @@ public class ChromeWebApkHost {
         return ChromeWebApkHost.isEnabled();
     }
 
+    @CalledByNative
+    private static ChromeWebApkHost create(long nativePtr) {
+        return new ChromeWebApkHost(nativePtr);
+    }
+
+    @CalledByNative
+    private void destroy() {
+        mNativePointer = 0;
+    }
+
+    /**
+     * Checks whether the Google Play Install API is available.
+     */
+    @CalledByNative
+    private void canUseGooglePlayInstallApi() {
+        ChromeApplication application = (ChromeApplication) ContextUtils.getApplicationContext();
+        GooglePlayWebApkInstallDelegate delegate = application.getGooglePlayWebApkInstallDelegate();
+        if (delegate == null) {
+            nativeOnCanUseGooglePlayInstallApi(mNativePointer, false);
+            return;
+        }
+
+        Callback<Boolean> callback = new Callback<Boolean>() {
+            @Override
+            public void onResult(Boolean result) {
+                if (mNativePointer != 0) {
+                    nativeOnCanUseGooglePlayInstallApi(mNativePointer, result);
+                }
+            }
+        };
+        delegate.canUseInstallApi("org.chromium.test", 0, "test", "", "", callback);
+    }
+
+    private ChromeWebApkHost(long nativePtr) {
+        mNativePointer = nativePtr;
+    }
+
     /**
      * Check the cached value to figure out if the feature is enabled. We have to use the cached
      * value because native library may not yet been loaded.
@@ -155,4 +198,6 @@ public class ChromeWebApkHost {
     }
 
     private static native boolean nativeCanUseGooglePlayToInstallWebApk();
+    private native void nativeOnCanUseGooglePlayInstallApi(long nativeChromeWebApkHost,
+            boolean success);
 }