Implement window.print() on Android

chrome/browser/android/tab_android.h

 // Copyright (c) 2012 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_TAB_ANDROID_H_
 #define CHROME_BROWSER_ANDROID_TAB_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/android/jni_weak_ref.h"
@@ skipping 141 matching lines @@
                                 jbyteArray j_post_data,
                                 jint page_transition,
                                 jstring j_referrer_url,
                                 jint referrer_policy,
                                 jboolean is_renderer_initiated);
   void SetActiveNavigationEntryTitleForUrl(JNIEnv* env,
                                            jobject obj,
                                            jstring jurl,
                                            jstring jtitle);
   bool Print(JNIEnv* env, jobject obj);
+
+  // Sets the tab as content to be printed through JNI.
+  void SetPendingPrint();
+
   // Called to get default favicon of current tab, return null if no
   // favicon is avaliable for current tab.
   base::android::ScopedJavaLocalRef<jobject> GetDefaultFavicon(JNIEnv* env,
                                                                jobject obj);
   // Register the Tab's native methods through JNI.
   static bool RegisterTabAndroid(JNIEnv* env);
 
  private:
   prerender::PrerenderManager* GetPrerenderManager() const;
 
@@ skipping 10 matching lines @@
   scoped_ptr<content::WebContents> web_contents_;
   scoped_ptr<chrome::android::ChromeWebContentsDelegateAndroid>
       web_contents_delegate_;
 
   scoped_ptr<browser_sync::SyncedTabDelegateAndroid> synced_tab_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(TabAndroid);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_TAB_ANDROID_H_