gfx: Make conversions from gfx::Point to PointF explicit.

ui/events/gestures/motion_event_aura_unittest.cc

 // 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.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 
 #include <cmath>
 
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 284 matching lines @@
   EXPECT_FLOAT_EQ(rotation_angle, clone->GetOrientation(1) * 180 / M_PI);
   EXPECT_FLOAT_EQ(pressure, clone->GetPressure(1));
 
   // TODO(mustaq): The move test seems out-of-scope here, crbug.com/450655
   radius_x = 76.98f;
   radius_y = 321.54f;
   rotation_angle = 64.f;
   pressure = 0.654f;
   TouchEvent move1 = TouchWithTapParams(
       ET_TOUCH_MOVED, ids[1], radius_x, radius_y, rotation_angle, pressure);
-  move1.set_location(gfx::Point(20, 21));
+  move1.set_location(gfx::PointF(20.f, 21.f));
   EXPECT_TRUE(event.OnTouch(move1));
 
   EXPECT_EQ(2U, event.GetPointerCount());
   EXPECT_FLOAT_EQ(radius_y, event.GetTouchMajor(1) / 2);
   EXPECT_FLOAT_EQ(radius_x, event.GetTouchMinor(1) / 2);
   EXPECT_FLOAT_EQ(rotation_angle, event.GetOrientation(1) * 180 / M_PI);
   EXPECT_FLOAT_EQ(pressure, event.GetPressure(1));
 
   // Test case: radius_x > radius_y, rotation_angle > 90
   radius_x = 123.45f;
@@ skipping 214 matching lines @@
     int id = i + kIdOffset;
     TouchEvent release = TouchWithType(ET_TOUCH_RELEASED, id);
     if (i < MotionEvent::MAX_TOUCH_POINT_COUNT)
       EXPECT_TRUE(event.OnTouch(release));
     else
       EXPECT_FALSE(event.OnTouch(release));
   }
 }
 
 }  // namespace ui