Change GestureConfiguration types to be consistent with each other and with the

ui/aura/window_unittest.cc

 // 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.
 
 #include "ui/aura/window.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 53 matching lines @@
         set_max_separation_for_gesture_touches_in_pixels(0);
   }
 
   virtual void TearDown() OVERRIDE {
     AuraTestBase::TearDown();
     ui::GestureConfiguration::
         set_max_separation_for_gesture_touches_in_pixels(max_separation_);
   }
 
  private:
-  int max_separation_;
+  float max_separation_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTest);
 };
 
 namespace {
 
 // Used for verifying destruction methods are invoked.
 class DestroyTrackingDelegateImpl : public TestWindowDelegate {
  public:
   DestroyTrackingDelegateImpl()
@@ skipping 3389 matching lines @@
 
   EXPECT_TRUE(animator.get());
   EXPECT_FALSE(animator->is_animating());
   EXPECT_TRUE(observer.animation_completed());
   EXPECT_FALSE(observer.animation_aborted());
   animator->RemoveObserver(&observer);
 }
 
 }  // namespace test
 }  // namespace aura