Revert of Android: Remove GetApplicationContext part 2

chrome/android/java/src/org/chromium/chrome/browser/autofill/CreditCardScanner.java

 // Copyright 2014 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.
 
 package org.chromium.chrome.browser.autofill;
 
+import android.content.Context;
+
 import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.content_public.browser.WebContents;
 
 /**
  * Helper for detecting whether the device supports scanning credit cards and for scanning credit
  * cards. The default implementation cannot scan cards. An implementing subclass must provide a
  * factory that builds its instances.
  */
 public class CreditCardScanner {
     /**
      * Can be used to build subclasses of the scanner without the user of the class knowing about
      * the subclass name.
      */
     private static Factory sFactory;
 
     /** The delegate to notify of scanning result. */
     protected final Delegate mDelegate;
 
+    /** Application context. Used in subclass. */
+    @SuppressFBWarnings({"URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD"})
+    protected final Context mContext;
+
     /** The web contents that's requesting a scan. Used in subclass. */
     @SuppressFBWarnings({"URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD"})
     protected final WebContents mWebContents;
 
     /** Builds instances of credit card scanners. */
     public interface Factory {
         /**
          * Builds an instance of credit card scanner.
          *
+         * @param context     Application context.
          * @param webContents The web contents that are requesting a scan.
          * @param delegate    The delegate to notify of scanning result.
          * @return An object that can scan a credit card.
          */
-        CreditCardScanner create(WebContents webContents, Delegate delegate);
+        CreditCardScanner create(Context context, WebContents webContents, Delegate delegate);
     }
 
     /** The delegate for credit card scanning. */
     public interface Delegate {
         /**
          * Notifies the delegate that scanning was cancelled.
          */
         void onScanCancelled();
 
         /**
@@ skipping 13 matching lines @@
      *
      * @param factory Can build instances of credit card scanners.
      */
     public static void setFactory(Factory factory) {
         sFactory = factory;
     }
 
     /**
      * Creates an instance of a credit card scanner.
      *
+     * @param context     Application context.
      * @param webContents The web contents that are requesting a scan.
      * @param delegate    The delegate to notify of scanning result.
      * @return An object that can scan a credit card.
      */
-    public static CreditCardScanner create(WebContents webContents, Delegate delegate) {
-        return sFactory != null ? sFactory.create(webContents, delegate)
-                                : new CreditCardScanner(webContents, delegate);
+    public static CreditCardScanner create(
+            Context context, WebContents webContents, Delegate delegate) {
+        return sFactory != null ? sFactory.create(context, webContents, delegate)
+                                : new CreditCardScanner(context, webContents, delegate);
     }
 
     /**
      * Constructor for the credit card scanner.
-     *  @param webContents The web contents that are requesting a scan.
+     *
+     * @param context     Application context.
+     * @param webContents The web contents that are requesting a scan.
      * @param delegate    The delegate to notify of scanning result.
      */
-    protected CreditCardScanner(WebContents webContents, Delegate delegate) {
+    protected CreditCardScanner(Context context, WebContents webContents, Delegate delegate) {
+        mContext = context;
         mWebContents = webContents;
         mDelegate = delegate;
     }
 
     /**
      * Returns true if this instance has the ability to scan credit cards.
      *
      * @return True if has ability to scan credit cards.
      */
     public boolean canScan() {
         return false;
     }
 
     /**
      * Scans a credit card. Will invoke a delegate callback with the result.
      */
     public void scan() {
         mDelegate.onScanCancelled();
     }
 }