Use EXPECT_NEAR to compare float values

ash/system/toast/toast_manager_unittest.cc

 // Copyright 2016 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/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/system/toast/toast_manager.h"
 #include "ash/common/wm/wm_screen_util.h"
 #include "ash/common/wm_shell.h"
 #include "ash/display/display_manager.h"
@@ skipping 215 matching lines @@
 
   gfx::Rect toast_bounds = GetCurrentWidget()->GetWindowBoundsInScreen();
   gfx::RectF precise_toast_bounds(toast_bounds);
   gfx::Rect root_bounds = wm::GetDisplayBoundsWithShelf(shelf->GetWindow());
 
   EXPECT_TRUE(toast_bounds.Intersects(shelf->GetUserWorkAreaBounds()));
   EXPECT_EQ(root_bounds.bottom() - 5, toast_bounds.bottom());
 
   gfx::Rect shelf_bounds = shelf->GetIdealBounds();
   EXPECT_FALSE(toast_bounds.Intersects(shelf_bounds));
-  EXPECT_EQ(round(shelf_bounds.right() +
-                  (root_bounds.width() - shelf_bounds.width()) / 2.0),
-            round(precise_toast_bounds.CenterPoint().x()));
+  EXPECT_NEAR(
+      shelf_bounds.right() + (root_bounds.width() - shelf_bounds.width()) / 2.0,
+      precise_toast_bounds.CenterPoint().x(), 1.f /* accepted error */);
 }
 
 TEST_F(ToastManagerTest, PositionWithUnifiedDesktop) {
   if (!SupportsMultipleDisplays())
     return;
 
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
   display_manager->SetUnifiedDesktopEnabled(true);
   UpdateDisplay("1000x500,0+600-100x500");
 
@@ skipping 35 matching lines @@
   EXPECT_EQ(base::ASCIIToUTF16("TEXT3"), GetCurrentText());
   // Cancel the shown toast.
   CancelToast(id3);
   // Confirm that the shown toast disappears.
   EXPECT_FALSE(GetCurrentOverlay());
   // Confirm that only 1 toast is shown.
   EXPECT_EQ(2, GetToastSerial());
 }
 
 }  // namespace ash