Extract more of the mouse logic from EventHandler

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

Index: third_party/WebKit/Source/core/input/ScrollManager.cpp
diff --git a/third_party/WebKit/Source/core/input/ScrollManager.cpp b/third_party/WebKit/Source/core/input/ScrollManager.cpp
index 59f48142dffc358d851fff03fcfb0608c6af7626..0f720e50cc0be53cb15c520582691be06c61a6ea 100644
--- a/third_party/WebKit/Source/core/input/ScrollManager.cpp
+++ b/third_party/WebKit/Source/core/input/ScrollManager.cpp
@@ -40,6 +40,14 @@ void ScrollManager::clear() {
   clearGestureScrollState();
 }
 
+DEFINE_TRACE(ScrollManager) {
+  visitor->trace(m_frame);
+  visitor->trace(m_scrollGestureHandlingNode);
+  visitor->trace(m_previousGestureScrolledNode);
+  visitor->trace(m_scrollbarHandlingScrollGesture);
+  visitor->trace(m_resizeScrollableArea);
+}
+
 void ScrollManager::clearGestureScrollState() {
   m_scrollGestureHandlingNode = nullptr;
   m_previousGestureScrolledNode = nullptr;
@@ -530,12 +538,4 @@ bool ScrollManager::canHandleGestureEvent(
   return false;
 }
 
-DEFINE_TRACE(ScrollManager) {
-  visitor->trace(m_frame);
-  visitor->trace(m_scrollGestureHandlingNode);
-  visitor->trace(m_previousGestureScrolledNode);
-  visitor->trace(m_scrollbarHandlingScrollGesture);
-  visitor->trace(m_resizeScrollableArea);
-}
-
 }  // namespace blink