Increase the slop value for text selection offsets

ui/touch_selection/touch_selection_controller_unittest.cc

Index: ui/touch_selection/touch_selection_controller_unittest.cc
diff --git a/ui/touch_selection/touch_selection_controller_unittest.cc b/ui/touch_selection/touch_selection_controller_unittest.cc
index 9003c4fb5e14ed900bf5bcbeb79e6c25d29554db..cf585c972525910cb215392022cce28888dd2ebb 100644
--- a/ui/touch_selection/touch_selection_controller_unittest.cc
+++ b/ui/touch_selection/touch_selection_controller_unittest.cc
@@ -884,7 +884,7 @@ TEST_F(TouchSelectionControllerTest, SelectionDragExtremeLineSize) {
   // offset, allowing seamless transition to neighboring lines with different
   // sizes. The drag coordinate for small lines should have an offset
   // commensurate with the small line size.
-  EXPECT_EQ(large_line_rect.bottom_left() - gfx::Vector2dF(0, 5.f),
+  EXPECT_EQ(large_line_rect.bottom_left() - gfx::Vector2dF(0, 8.f),
             GetLastSelectionStart());
   EXPECT_EQ(small_line_rect.CenterPoint(), GetLastSelectionEnd());