Toolbar is a root layer for the UI compositor

chrome/browser/android/compositor/scene_layer/toolbar_scene_layer.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
+// 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.
 
-#ifndef CHROME_BROWSER_ANDROID_COMPOSITOR_SCENE_LAYER_STATIC_TAB_SCENE_LAYER_H_
-#define CHROME_BROWSER_ANDROID_COMPOSITOR_SCENE_LAYER_STATIC_TAB_SCENE_LAYER_H_
-
-#include <jni.h>
+#ifndef CHROME_BROWSER_ANDROID_COMPOSITOR_SCENE_LAYER_TOOLBAR_SCENE_LAYER_H_
+#define CHROME_BROWSER_ANDROID_COMPOSITOR_SCENE_LAYER_TOOLBAR_SCENE_LAYER_H_
 
 #include <memory>
+#include <vector>
 
+#include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/macros.h"
-#include "base/memory/ref_counted.h"
 #include "chrome/browser/android/compositor/scene_layer/scene_layer.h"
-#include "ui/gfx/geometry/point.h"
-#include "ui/gfx/geometry/point_f.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/geometry/size_f.h"
+#include "ui/android/resources/resource_manager_impl.h"
 
 namespace cc {
 class Layer;
+class SolidColorLayer;
 }
 
 namespace chrome {
 namespace android {
 
-class ContentLayer;
 class ToolbarLayer;
 
-// A SceneLayer to render a static tab.
-class StaticTabSceneLayer : public SceneLayer {
+class ToolbarSceneLayer : public SceneLayer {
  public:
-  StaticTabSceneLayer(JNIEnv* env, jobject jobj);
-  ~StaticTabSceneLayer() override;
+  ToolbarSceneLayer(JNIEnv* env, jobject jobj);
+  ~ToolbarSceneLayer() override;
 
-  bool ShouldShowBackground() override;
-  SkColor GetBackgroundColor() override;
-
-  // Update StaticTabSceneLayer with the new parameters.
-  void UpdateTabLayer(
-      JNIEnv* env,
-      const base::android::JavaParamRef<jobject>& jobj,
-      jfloat content_viewport_x,
-      jfloat content_viewport_y,
-      jfloat content_viewport_width,
-      jfloat content_viewport_height,
-      const base::android::JavaParamRef<jobject>& jtab_content_manager,
-      jint id,
-      jint toolbar_resource_id,
-      jboolean can_use_live_layer,
-      jint default_background_color,
-      jfloat x,
-      jfloat y,
-      jfloat width,
-      jfloat height,
-      jfloat content_offset_y,
-      jfloat static_to_view_blend,
-      jfloat saturation,
-      jfloat brightness);
   // Update the compositor version of the toolbar.
   void UpdateToolbarLayer(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& object,
       const base::android::JavaParamRef<jobject>& jresource_manager,
       jint toolbar_resource_id,
       jint toolbar_background_color,
       jint url_bar_resource_id,
       jfloat url_bar_alpha,
       jfloat top_offset,
       bool visible,
       bool show_shadow);
+
   // Update the progress bar.
   void UpdateProgressBar(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& object,
       jint progress_bar_x,
       jint progress_bar_y,
       jint progress_bar_width,
       jint progress_bar_height,
       jint progress_bar_color,
       jint progress_bar_background_x,
       jint progress_bar_background_y,
       jint progress_bar_background_width,
       jint progress_bar_background_height,
       jint progress_bar_background_color);
 
+  void SetContentTree(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& jobj,
+      const base::android::JavaParamRef<jobject>& jcontent_tree);
+
+  SkColor GetBackgroundColor() override;
+
+  bool ShouldShowBackground() override;
+
  private:
-  scoped_refptr<chrome::android::ContentLayer> content_layer_;
-  scoped_refptr<cc::Layer> content_scene_layer_;
+  bool should_show_background_;
+  SkColor background_color_;
+  scoped_refptr<cc::Layer> content_container_;
   scoped_refptr<ToolbarLayer> toolbar_layer_;
 
-  int last_set_tab_id_;
-  int background_color_;
-  float brightness_;
-
-  DISALLOW_COPY_AND_ASSIGN(StaticTabSceneLayer);
+  DISALLOW_COPY_AND_ASSIGN(ToolbarSceneLayer);
 };
 
-bool RegisterStaticTabSceneLayer(JNIEnv* env);
+bool RegisterToolbarSceneLayer(JNIEnv* env);
 
 }  // namespace android
 }  // namespace chrome
 
-#endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_SCENE_LAYER_STATIC_TAB_SCENE_LAYER_H_
+#endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_SCENE_LAYER_TOOLBAR_SCENE_LAYER_H_