fixed adding bookmark shortcut from home screen
  bug: http://b/issue?id=2948937
  added shortcut activity to host bookmarks page fragment

Change-Id: I39db8985b3c07fae6ca800cc57da3747040cb814
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 14e8aeb..8ccb634 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -152,8 +152,8 @@
                   android:launchMode="singleTop" android:configChanges="orientation|keyboardHidden">
         </activity>
 
-        <activity-alias android:name="ShortcutBookmarksPage"
-            android:targetActivity="BrowserBookmarksPage"
+        <activity android:name="ShortcutActivity"
+            android:theme="@style/ShortcutTheme"
             android:label="@string/shortcut_bookmark"
             android:icon="@drawable/ic_launcher_shortcut_browser_bookmark">
 
@@ -162,7 +162,7 @@
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
 
-        </activity-alias>
+        </activity>
 
         <activity android:name="BrowserDownloadPage" android:label=""
                   android:configChanges="orientation|keyboardHidden">