Use EXPECT_NEAR to compare float values

ash/system/toast/toast_manager_unittest.cc

Index: ash/system/toast/toast_manager_unittest.cc
diff --git a/ash/system/toast/toast_manager_unittest.cc b/ash/system/toast/toast_manager_unittest.cc
index 04d5355a6c373dbe5905adeefb4c91cacdfbd57b..84d97d3e61d81e638d16b1f8f1983599bb5f7b7e 100644
--- a/ash/system/toast/toast_manager_unittest.cc
+++ b/ash/system/toast/toast_manager_unittest.cc
@@ -233,9 +233,9 @@ TEST_F(ToastManagerTest, PositionWithVisibleLeftShelf) {
 
   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) {