Remove abstract Clone and Cancel methods from MotionEvent

ui/events/gesture_detection/bitset_32.h

 // Copyright 2014 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_GESTURE_DETECTION_BITSET_32_H_
 #define UI_EVENTS_GESTURE_DETECTION_BITSET_32_H_
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 
@@ skipping 69 matching lines @@
   }
 
   // Finds the last marked bit in the set and clears it.  Returns the bit index.
   // Result is undefined if all bits are unmarked.
   inline uint32_t clear_last_marked_bit() {
     uint32_t n = last_marked_bit();
     clear_bit(n);
     return n;
   }
 
-  // Gets the inde of the specified bit in the set, which is the number of
+  // Gets the index of the specified bit in the set, which is the number of
   // marked bits that appear before the specified bit.
   inline uint32_t get_index_of_bit(uint32_t n) const {
     DCHECK_LE(n, 31U);
     return popcnt(value & ~(0xffffffffUL >> n));
   }
 
   inline bool operator==(const BitSet32& other) const {
     return value == other.value;
   }
   inline bool operator!=(const BitSet32& other) const {
@@ skipping 23 matching lines @@
   }
   static inline uint32_t ctz(uint32_t v) {
     return popcnt((v & static_cast<uint32_t>(-static_cast<int>(v))) - 1);
   }
 #endif
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_GESTURE_DETECTION_BITSET_32_H_