Use metadata when launching WebAPKs.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
index 7451339ceffe6380806654b5633e306eca19baee..745585d86cd4ff7c979603e75afa317acd2731f1 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkActivity.java
@@ -18,6 +18,7 @@ import org.chromium.chrome.browser.tab.TabDelegateFactory;
 import org.chromium.chrome.browser.tab.TabRedirectHandler;
 import org.chromium.components.navigation_interception.NavigationParams;
 import org.chromium.content.browser.ChildProcessCreationParams;
+import org.chromium.content.browser.ScreenOrientationProvider;
 import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.ui.base.PageTransition;
 import org.chromium.webapk.lib.client.WebApkServiceConnectionManager;
@@ -46,10 +47,40 @@ public class WebApkActivity extends WebappActivity {
     }
 
     @Override
-    protected void initializeSplashScreenWidgets(final int backgroundColor) {
-        // TODO(hanxi): Removes this function and use {@link WebApkActivity}'s implementation
-        // when WebAPKs are registered in WebappRegistry.
-        initializeSplashScreenWidgets(backgroundColor, null);
+    protected void onDataStorageFetched(WebappDataStorage storage) {
+        if (storage == null) {
+            recordSplashScreenThemeColorUma();
+            initializeSplashScreenWidgets(null);
+            // Register the WebAPK.
+            WebappRegistry.registerWebapp(WebApkActivity.this, getId(),
+                    new WebappRegistry.FetchWebappDataStorageCallback() {
+                        @Override
+                        public void onWebappDataStorageRetrieved(
+                                WebappDataStorage storage) {
+                            storage.updateFromShortcutIntent(getIntent());
+                        }
+                    });
+            return;
+        }
+        // Update WebappInfo from WebappDataStorage because the information in WebappDataStorage
+        // is more up to date than the information in the launch intent. Whenever the Web Manifest
+        // changes, WebappDataStorage is updated. Depending on which of the Web Manifest's fields
+        // change a new WebAPK may or may not be downloaded from the WebAPK server.
+        // TODO(hanxi): Introduces data fetcher to detect web manifest changes and
+        // update SharedPreference for WebAPKs.
+        WebappInfo info = storage.createWebappInfo(mWebappInfo);
+        boolean orientationChanged =
+                info.orientation() != mWebappInfo.orientation();
+        mWebappInfo = info;
+
+        if (orientationChanged) {
+            ScreenOrientationProvider.lockOrientation(
+                    (byte) mWebappInfo.orientation(), WebApkActivity.this);
+        }
+        recordSplashScreenThemeColorUma();
+        storage.updateLastUsedTime();
+        updateTaskDescription();
+        retrieveSplashScreenImage(storage);
     }
 
     @Override