Mousewhell on Chrome Android can scroll vertically and horizontally

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 101 matching lines @@
   jboolean SendMouseMoveEvent(JNIEnv* env,
                               jobject obj,
                               jlong time_ms,
                               jfloat x,
                               jfloat y);
   jboolean SendMouseWheelEvent(JNIEnv* env,
                                jobject obj,
                                jlong time_ms,
                                jfloat x,
                                jfloat y,
-                               jfloat vertical_axis);
+                               jfloat vertical_axis,
+                               jfloat horizontal_axis);
   void ScrollBegin(JNIEnv* env, jobject obj, jlong time_ms,
                    jfloat x, jfloat y, jfloat hintx, jfloat hinty);
   void ScrollEnd(JNIEnv* env, jobject obj, jlong time_ms);
   void ScrollBy(JNIEnv* env, jobject obj, jlong time_ms,
                 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);
   void FlingCancel(JNIEnv* env, jobject obj, jlong time_ms);
   void SingleTap(JNIEnv* env, jobject obj, jlong time_ms,
                  jfloat x, jfloat y);
@@ skipping 211 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_