Remove dependency of power_save_blocker_android on various content bits

content/public/android/java/src/org/chromium/content/browser/PowerSaveBlocker.java

 // 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.
 
 package org.chromium.content.browser;
 
 import android.view.View;
 
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.ui.base.ViewAndroidDelegate;
 
 import java.lang.ref.WeakReference;
 
 @JNINamespace("content")
 class PowerSaveBlocker {
     // WeakReference to prevent leaks in Android WebView.
     private WeakReference<View> mKeepScreenOnView;
 
     @CalledByNative
     private static PowerSaveBlocker create() {
         return new PowerSaveBlocker();
     }
 
     private PowerSaveBlocker() {}
 
     @CalledByNative
-    private void applyBlock(ContentViewCore contentViewCore) {
+    private void applyBlock(ViewAndroidDelegate delegate) {
         assert mKeepScreenOnView == null;
-        ViewAndroidDelegate delegate = contentViewCore.getViewAndroidDelegate();
         View anchorView = delegate.acquireAnchorView();
         mKeepScreenOnView = new WeakReference<>(anchorView);
         delegate.setAnchorViewPosition(anchorView, 0, 0, 0, 0);
         anchorView.setKeepScreenOn(true);
     }
 
     @CalledByNative
-    private void removeBlock(ContentViewCore contentViewCore) {
+    private void removeBlock(ViewAndroidDelegate delegate) {
         assert mKeepScreenOnView != null;
         View anchorView = mKeepScreenOnView.get();
         mKeepScreenOnView = null;
         if (anchorView == null) return;
 
-        ViewAndroidDelegate delegate = contentViewCore.getViewAndroidDelegate();
         anchorView.setKeepScreenOn(false);
         delegate.releaseAnchorView(anchorView);
     }
 }