Upstream oodles of Chrome for Android code into Chromium.

chrome/browser/android/compositor/scene_layer/reader_mode_scene_layer.cc

+// 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.
+
+#include "chrome/browser/android/compositor/scene_layer/reader_mode_scene_layer.h"
+
+#include "base/android/jni_android.h"
+#include "chrome/browser/android/compositor/layer/reader_mode_layer.h"
+#include "content/public/browser/android/content_view_core.h"
+#include "jni/ReaderModeSceneLayer_jni.h"
+#include "ui/android/resources/resource_manager_impl.h"
+
+namespace chrome {
+namespace android {
+
+ReaderModeSceneLayer::ReaderModeSceneLayer(JNIEnv* env, jobject jobj)
+    : SceneLayer(env, jobj) {
+}
+
+ReaderModeSceneLayer::~ReaderModeSceneLayer() {
+}
+
+void ReaderModeSceneLayer::UpdateReaderModeLayer(
+    JNIEnv* env,
+    jobject object,
+    jint panel_background_resource_id,
+    jint panel_text_resource_id,
+    jobject jreader_mode_content_view_core,
+    jfloat panel_y,
+    jfloat panel_width,
+    jfloat panel_margin_top,
+    jfloat panel_height,
+    jfloat distilled_y,
+    jfloat distilled_height,
+    jfloat x,
+    jfloat panel_text_opacity,
+    jint header_background_color,
+    jobject jresource_manager) {
+  ui::ResourceManager* resource_manager =
+      ui::ResourceManagerImpl::FromJavaObject(jresource_manager);
+  // Lazily construct the reader mode layer, as the feature is only
+  // conditionally enabled.
+  if (!reader_mode_layer_.get()) {
+    if (!resource_manager)
+      return;
+    reader_mode_layer_ = ReaderModeLayer::Create(resource_manager);
+    layer_->AddChild(reader_mode_layer_->layer());
+  }
+
+  // NOTE(pedrosimonetti): The ContentViewCore might not exist at this time if
+  // the Reader Mode has not been requested yet. In this case,
+  // we'll pass NULL to Reader Mode's Layer Tree.
+  content::ContentViewCore* content_view_core =
+      !jreader_mode_content_view_core ? NULL
+                          : content::ContentViewCore::GetNativeContentViewCore(
+                                env, jreader_mode_content_view_core);
+
+  reader_mode_layer_->SetProperties(
+      panel_background_resource_id, panel_text_resource_id,
+      content_view_core,
+      panel_y, panel_width, panel_margin_top, panel_height,
+      distilled_y, distilled_height,
+      x,
+      panel_text_opacity, header_background_color);
+}
+
+static jlong Init(JNIEnv* env, jobject jobj) {
+  // This will automatically bind to the Java object and pass ownership there.
+  ReaderModeSceneLayer* tree_provider =
+      new ReaderModeSceneLayer(env, jobj);
+  return reinterpret_cast<intptr_t>(tree_provider);
+}
+
+bool RegisterReaderModeSceneLayer(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace android
+}  // namespace chrome