Makes the launcher auto-hide for maximized windows. This turned out to

ash/wm/workspace/workspace.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.h"
 
 #include <algorithm>
 
 #include "ash/wm/property_util.h"
 #include "ash/wm/window_util.h"
@@ skipping 45 matching lines @@
 }
 
 bool Workspace::Contains(aura::Window* window) const {
   return std::find(windows_.begin(), windows_.end(), window) != windows_.end();
 }
 
 void Workspace::Activate() {
   workspace_manager_->SetActiveWorkspace(this);
 }
 
-void Workspace::SetBounds(const gfx::Rect& bounds) {
-  if (bounds_ == bounds)
-    return;
-
-  gfx::Rect old_bounds = bounds_;
-  bounds_ = bounds;
-  // Don't send size change for transition from empty -> not empty. That only
-  // happens when we're first created.
-  if (!old_bounds.IsEmpty())
-    OnWorkspaceSizeChanged(old_bounds);
-}
-
 void Workspace::SetWindowBounds(aura::Window* window, const gfx::Rect& bounds) {
   workspace_manager_->SetWindowBounds(window, bounds);
 }
 
 void Workspace::SetIgnoredWindow(aura::Window* window) {
   workspace_manager_->set_ignored_window(window);
 }
 
 }  // namespace internal
 }  // namespace ash