Move middle-click autoscroll to synthetic fling.

third_party/WebKit/Source/core/input/KeyboardEventManager.cpp

 // 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.
 
 #include "KeyboardEventManager.h"
 
 #include <memory>
 
 #include "core/dom/Element.h"
 #include "core/dom/UserGestureIndicator.h"
@@ skipping 159 matching lines @@
 
   if (initial_key_event.windows_key_code == VK_CAPITAL)
     CapsLockStateMayHaveChanged();
 
   if (scroll_manager_->MiddleClickAutoscrollInProgress()) {
     DCHECK(RuntimeEnabledFeatures::MiddleClickAutoscrollEnabled());
     // If a key is pressed while the middleClickAutoscroll is in progress then
     // we want to stop.
     if (initial_key_event.GetType() == WebInputEvent::kKeyDown ||
         initial_key_event.GetType() == WebInputEvent::kRawKeyDown)
-      scroll_manager_->StopAutoscroll();
+      scroll_manager_->StopMiddleClickAutoscroll();
 
     // If we were in panscroll mode, we swallow the key event
     return WebInputEventResult::kHandledSuppressed;
   }
 
   // Check for cases where we are too early for events -- possible unmatched key
   // up from pressing return in the location bar.
   Node* node = EventTargetNodeForDocument(frame_->GetDocument());
   if (!node)
     return WebInputEventResult::kNotHandled;
@@ skipping 295 matching lines @@
   if (current_modifiers & ::cmdKey)
     modifiers |= WebInputEvent::kMetaKey;
 #else
   // TODO(crbug.com/538289): Implement on other platforms.
   return static_cast<WebInputEvent::Modifiers>(0);
 #endif
   return static_cast<WebInputEvent::Modifiers>(modifiers);
 }
 
 }  // namespace blink