Fix remaining incompatibilities between scoped_ptr and unique_ptr.

ui/events/blink/input_handler_proxy.cc

 // Copyright 2013 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 "ui/events/blink/input_handler_proxy.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 980 matching lines @@
 
 bool InputHandlerProxy::CancelCurrentFling() {
   if (CancelCurrentFlingWithoutNotifyingClient()) {
     client_->DidStopFlinging();
     return true;
   }
   return false;
 }
 
 bool InputHandlerProxy::CancelCurrentFlingWithoutNotifyingClient() {
-  bool had_fling_animation = fling_curve_;
+  bool had_fling_animation = !!fling_curve_;
   if (had_fling_animation &&
       fling_parameters_.sourceDevice == blink::WebGestureDeviceTouchscreen) {
     cc::ScrollState scroll_state(0, 0, fling_parameters_.point.x,
                                  fling_parameters_.point.y, 0, 0, false, true,
                                  true);
     input_handler_->ScrollEnd(&scroll_state);
     TRACE_EVENT_ASYNC_END0(
         "input",
         "InputHandlerProxy::HandleGestureFling::started",
         this);
@@ skipping 133 matching lines @@
   // trigger a scroll, e.g., with a trivial time delta between fling updates.
   // Return true in this case to prevent early fling termination.
   if (std::abs(clipped_increment.width) < kScrollEpsilon &&
       std::abs(clipped_increment.height) < kScrollEpsilon)
     return true;
 
   return did_scroll;
 }
 
 }  // namespace ui