Removed kAshDisableTextFilteringInOverviewMode flag.

ash/wm/overview/window_grid.cc

Index: ash/wm/overview/window_grid.cc
diff --git a/ash/wm/overview/window_grid.cc b/ash/wm/overview/window_grid.cc
index b605ad585319ef796676e3f3b0fcfcd08b0974f6..a03966ab735fe606208b52407aef1fe205552813 100644
--- a/ash/wm/overview/window_grid.cc
+++ b/ash/wm/overview/window_grid.cc
@@ -162,16 +162,9 @@ void WindowGrid::PositionWindows(bool animate) {
       ScreenUtil::GetDisplayWorkAreaBoundsInParent(
           Shell::GetContainer(root_window_, kShellWindowId_DefaultContainer)));
 
-  // If the text filtering feature is enabled, reserve space at the top for the
-  // text filtering textbox to appear.
-  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kAshDisableTextFilteringInOverviewMode)) {
-    total_bounds.Inset(
-        0,
-        WindowSelector::kTextFilterBottomEdge + kTextFilterBottomMargin,
-        0,
-        0);
-  }
+  // Reserve space at the top for the text filtering textbox to appear.
+  total_bounds.Inset(
+      0, WindowSelector::kTextFilterBottomEdge + kTextFilterBottomMargin, 0, 0);
 
   // Find the minimum number of windows per row that will fit all of the
   // windows on screen.