[Embeddingapi] TC dev for Setting xwalk:background color

BUG=https://crosswalk-project.org/jira/browse/CTS-674

usecase/usecase-embedding-android-tests/embeddingapi/AndroidManifest.xml

@@ -836,6 +836,15 @@
                 <category android:name="XWalkView.Basic" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".basic.XWalkViewWithSetBackgroundColorInLayout"
+            android:label="@string/title_activity_xwalk_view_with_set_background_color_in_layout"
+            android:parentActivityName=".XWalkEmbeddedAPISample" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="XWalkView.Basic" />
+            </intent-filter>
+        </activity>
         <activity
             android:name=".extended.XWalkViewWithComputeScroll"
             android:label="@string/title_activity_xwalk_view_with_compute_scroll"

usecase/usecase-embedding-android-tests/embeddingapi/res/layout/xwview_backgroundcolor_layout.xml

@@ -0,0 +1,15 @@
+<!--
+ Copyright (c) 2016 Intel Corporation. All rights reserved.
+
+     Use of this source code is governed by a BSD-style license that can be
+     found in the LICENSE file.
+-->
+
+<org.xwalk.core.XWalkView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/xwalkview"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:background="#FF0000" >
+
+</org.xwalk.core.XWalkView>
+

usecase/usecase-embedding-android-tests/embeddingapi/res/values/strings.xml

@@ -126,6 +126,7 @@ found in the LICENSE file.
     <string name="title_activity_xwalk_view_with_shouldinterceptloadrequest">XWalkViewWithShouldInterceptLoadRequest</string>
     <string name="title_activity_xwalk_view_with_clear_clientcert_preferences">XWalkViewWithClearClientCertPreferences</string>
     <string name="title_activity_xwalk_view_with_set_background_color">XWalkViewWithSetBackgroundColor</string>
+    <string name="title_activity_xwalk_view_with_set_background_color_in_layout">XWalkViewWithSetBackgroundColorInLayout</string>
     <string name="title_activity_xwalk_view_with_compute_scroll">XWalkViewWithComputeScroll</string>
     <string name="title_activity_xwalk_view_with_new_load">XWalkViewWithNewLoad</string>
     <string name="title_activity_xwalk_view_get_certificate">XWalkViewGetCertificate</string>

usecase/usecase-embedding-android-tests/embeddingapi/src/org/xwalk/embedded/api/sample/basic/XWalkViewWithSetBackgroundColorInLayout.java

@@ -0,0 +1,44 @@
+// Copyright (c) 2014 Intel Corporation. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.xwalk.embedded.api.sample.basic;
+
+import org.xwalk.embedded.api.sample.R;
+
+import org.xwalk.core.XWalkActivity;
+import org.xwalk.core.XWalkView;
+
+import android.app.AlertDialog;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.widget.LinearLayout;
+
+public class XWalkViewWithSetBackgroundColorInLayout extends XWalkActivity {
+    private XWalkView mXWalkView;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.container);
+    }
+
+    @Override
+    protected void onXWalkReady() {
+        StringBuffer mess = new StringBuffer();
+        mess.append("Test Purpose: \n\n")
+        .append("Verifies XWalkView can set background color without delay.\n\n")
+        .append("Expected Result:\n\n")
+        .append("Test passes if app load the red without flicker.");
+        new  AlertDialog.Builder(this)
+        .setTitle("Info" )
+        .setMessage(mess.toString())
+        .setPositiveButton("confirm" ,  null )
+        .show();
+
+        setContentView(R.layout.xwview_backgroundcolor_layout);
+        mXWalkView = (XWalkView) findViewById(R.id.xwalkview);
+        mXWalkView.load("file:///android_asset/index4995_local_text.html", null);
+    }
+
+}