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

ash/wm/workspace/workspace_event_handler_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 "ash/wm/workspace/workspace_event_handler.h"
 
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/window_state.h"
@@ skipping 18 matching lines @@
 #endif
 
 namespace ash {
 
 namespace {
 
 // Clicks |button| with |flags|.
 void ClickButtonWithFlags(ui::test::EventGenerator* generator,
                           int button,
                           int flags) {
-  gfx::Point location = generator->current_location();
+  auto location = gfx::PointF(generator->current_location());
   ui::MouseEvent press(ui::ET_MOUSE_PRESSED, location, location,
                        ui::EventTimeForNow(), button | flags, button);
   generator->Dispatch(&press);
   ui::MouseEvent release(ui::ET_MOUSE_RELEASED, location, location,
                          ui::EventTimeForNow(), button | flags, button);
   generator->Dispatch(&release);
 }
 
 }  // namespace
 
@@ skipping 493 matching lines @@
   delegate.set_window_component(HTCAPTION);
   generator.PressRightButton();
   generator.ReleaseRightButton();
   EXPECT_FALSE(window_state->IsMaximized());
   ClickButtonWithFlags(&generator, ui::EF_LEFT_MOUSE_BUTTON,
                        ui::EF_IS_DOUBLE_CLICK);
   EXPECT_FALSE(window_state->IsMaximized());
 }
 
 }  // namespace ash