Simplify content_layer attachment and viewporting logic.

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

 // 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.
 
 #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>
 
 #include <memory>
@@ skipping 22 matching lines @@
   StaticTabSceneLayer(JNIEnv* env, jobject jobj);
   ~StaticTabSceneLayer() 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);
 
  private:
   scoped_refptr<android::ContentLayer> content_layer_;
   scoped_refptr<cc::Layer> content_scene_layer_;
 
   int last_set_tab_id_;
   int background_color_;
   float brightness_;
 
   DISALLOW_COPY_AND_ASSIGN(StaticTabSceneLayer);
 };
 
 bool RegisterStaticTabSceneLayer(JNIEnv* env);
 
 }  // namespace android
 
 #endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_SCENE_LAYER_STATIC_TAB_SCENE_LAYER_H_