Plumb smooth scrolling in Chromium compositor

content/browser/android/content_view_core_impl.h

 // Copyright 2012 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 CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_
 
 #include <vector>
 
 #include "base/android/jni_android.h"
@@ skipping 127 matching lines @@
                 jfloat x, jfloat y, jfloat dx, jfloat dy);
   void FlingStart(JNIEnv* env,
                   jobject obj,
                   jlong time_ms,
                   jfloat x,
                   jfloat y,
                   jfloat vx,
                   jfloat vy,
                   jboolean target_viewport);
   void FlingCancel(JNIEnv* env, jobject obj, jlong time_ms);
+  void SmoothScrollStart(JNIEnv* env,
+                         jobject obj,
+                         jlong time_ms,
+                         float start_x,
+                         float start_y,
+                         float dx,
+                         float dy,
+                         jlong duration_ms);
   void SingleTap(JNIEnv* env, jobject obj, jlong time_ms,
                  jfloat x, jfloat y);
   void DoubleTap(JNIEnv* env, jobject obj, jlong time_ms,
                  jfloat x, jfloat y) ;
   void LongPress(JNIEnv* env, jobject obj, jlong time_ms,
                  jfloat x, jfloat y);
   void PinchBegin(JNIEnv* env, jobject obj, jlong time_ms, jfloat x, jfloat y);
   void PinchEnd(JNIEnv* env, jobject obj, jlong time_ms);
   void PinchBy(JNIEnv* env, jobject obj, jlong time_ms,
                jfloat x, jfloat y, jfloat delta);
@@ skipping 231 matching lines @@
   scoped_refptr<GinJavaBridgeDispatcherHost> java_bridge_dispatcher_host_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentViewCoreImpl);
 };
 
 bool RegisterContentViewCore(JNIEnv* env);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIEW_CORE_IMPL_H_