Android: Remove GetApplicationContext part 1

chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java

 // Copyright 2015 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;
 
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.Activity;
 import android.app.SearchManager;
@@ skipping 1163 matching lines @@
             });
         }
 
         mRemoveWindowBackgroundDone = true;
     }
 
     @Override
     public void finishNativeInitialization() {
         mNativeInitialized = true;
         maybeRemoveWindowBackground();
-        DownloadManagerService.getDownloadManagerService(
-                getApplicationContext()).onActivityLaunched();
+        DownloadManagerService.getDownloadManagerService().onActivityLaunched();
 
         VrShellDelegate.onNativeLibraryAvailable();
         super.finishNativeInitialization();
     }
 
     /**
      * Called when the accessibility status of this device changes.  This might be triggered by
      * touch exploration or general accessibility status updates.  It is an aggregate of two other
      * accessibility update methods.
      * @see #onAccessibilityModeChanged(boolean)
@@ skipping 940 matching lines @@
      * draw over VR contents should be hidden in this call.
      */
     public void onEnterVR() {}
 
     /**
      * Called when VR mode using this activity is exited. Any state set for VR should be restored
      * in this call, including showing 2D UI that was hidden.
      */
     public void onExitVR() {}
 }