Use Manifest's orientation when creating a shortcut and as default orientation.

chrome/browser/android/shortcut_helper.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 #define CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "chrome/common/web_application_info.h"
 #include "components/favicon_base/favicon_types.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/manifest.h"
+#include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h"
 
 namespace content {
 class WebContents;
 }  // namespace content
 
 namespace IPC {
 class Message;
 }
 
 class GURL;
@@ skipping 35 matching lines @@
 
   // WebContentsObserver
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void WebContentsDestroyed() OVERRIDE;
 
   // Adds a shortcut to the launcher.  Must be called from a WorkerPool task.
   static void AddShortcutInBackground(
       const GURL& url,
       const base::string16& title,
       content::Manifest::DisplayMode display,
-      const favicon_base::FaviconRawBitmapResult& bitmap_result);
+      const favicon_base::FaviconRawBitmapResult& bitmap_result,
+      blink::WebScreenOrientationLockType orientation);
 
   // Registers JNI hooks.
   static bool RegisterShortcutHelper(JNIEnv* env);
 
  private:
   virtual ~ShortcutHelper();
 
   void Destroy();
 
   JavaObjectWeakGlobalRef java_ref_;
 
   GURL url_;
   base::string16 title_;
   int launcher_large_icon_size_;
   content::Manifest::DisplayMode display_;
   favicon_base::FaviconRawBitmapResult icon_;
   base::CancelableTaskTracker cancelable_task_tracker_;
+  blink::WebScreenOrientationLockType orientation_;
 
   base::WeakPtrFactory<ShortcutHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ShortcutHelper);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_