Implementing the dispatch of the swipe gesture for one-finger touch swipes.

ui/events/event_constants.h

 // Copyright (c) 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 UI_EVENTS_EVENT_CONSTANTS_H_
 #define UI_EVENTS_EVENT_CONSTANTS_H_
 
 namespace ui {
 
 // Event types. (prefixed because of a conflict with windows headers)
@@ skipping 28 matching lines @@
   ET_GESTURE_TAP_UNCONFIRMED, // User tapped, but the tap delay hasn't expired.
   ET_GESTURE_DOUBLE_TAP,
   ET_GESTURE_BEGIN,  // Sent before any other gesture types.
   ET_GESTURE_END,    // Sent after any other gestures.
   ET_GESTURE_TWO_FINGER_TAP,
   ET_GESTURE_PINCH_BEGIN,
   ET_GESTURE_PINCH_END,
   ET_GESTURE_PINCH_UPDATE,
   ET_GESTURE_LONG_PRESS,
   ET_GESTURE_LONG_TAP,
   // A SWIPE gesture can happen at the end of a TAP_UP gesture if the

[tdresser, 2014/05/26 20:49:58]

This comment still kinda implies that multiple fingers are required. (And
there's no such thing as a TAP_UP gesture).

Perhaps:

// A SWIPE gesture can happen at the end of a touch sequence if 
// the finger velocity was high enough when the first finger was  
// released.

[mfomitchev, 2014/05/26 22:07:14]

Done.

   // finger(s) were moving quickly before they are released.
-  ET_GESTURE_MULTIFINGER_SWIPE,
+  ET_GESTURE_SWIPE,
   ET_GESTURE_SHOW_PRESS,
 
   // Sent by Win8+ metro when the user swipes from the bottom or top.
   ET_GESTURE_WIN8_EDGE_SWIPE,
 
   // Scroll support.
   // TODO[davemoore] we need to unify these events w/ touch and gestures.
   ET_SCROLL,
   ET_SCROLL_FLING_START,
   ET_SCROLL_FLING_CANCEL,
@@ skipping 63 matching lines @@
   EP_PREDISPATCH,
   EP_PRETARGET,
   EP_TARGET,
   EP_POSTTARGET,
   EP_POSTDISPATCH
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_CONSTANTS_H_