Use ContainerView for PowerSaveBlocker to keep screen on

ui/android/view_android.cc

 // Copyright 2016 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.
 
 #include "ui/android/view_android.h"
 
 #include <algorithm>
 
 #include "base/android/jni_android.h"
 #include "cc/layers/layer.h"
@@ skipping 115 matching lines @@
       ->GetDisplayNearestWindow(this)
       .device_scale_factor();
   int left_margin = std::round(bounds.x() * scale);
   int top_margin = std::round((content_offset().y() + bounds.y()) * scale);
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_ViewAndroidDelegate_setViewPosition(
       env, delegate, anchor, bounds.x(), bounds.y(), bounds.width(),
       bounds.height(), scale, left_margin, top_margin);
 }
 
+ScopedJavaLocalRef<jobject> ViewAndroid::GetContainerView() {
+  ScopedJavaLocalRef<jobject> delegate(GetViewAndroidDelegate());
+  if (delegate.is_null())
+    return ScopedJavaLocalRef<jobject>();

[boliu, 2017/01/18 18:21:16]

nullptr should work I think

[Jinsuk Kim, 2017/01/19 23:48:08]

Done.

+
+  JNIEnv* env = base::android::AttachCurrentThread();
+  return Java_ViewAndroidDelegate_getContainerView(env, delegate);
+}
+
 void ViewAndroid::RemoveChild(ViewAndroid* child) {
   DCHECK(child);
   DCHECK_EQ(child->parent_, this);
 
   std::list<ViewAndroid*>::iterator it =
       std::find(children_.begin(), children_.end(), child);
   DCHECK(it != children_.end());
   children_.erase(it);
   child->parent_ = nullptr;
 }
@@ skipping 24 matching lines @@
                                    const JavaRef<jobject>& jimage) {
   ScopedJavaLocalRef<jobject> delegate(GetViewAndroidDelegate());
   if (delegate.is_null())
     return false;
   JNIEnv* env = base::android::AttachCurrentThread();
   return Java_ViewAndroidDelegate_startDragAndDrop(env, delegate, jtext,
                                                    jimage);
 }
 
 }  // namespace ui