Remove TransparentActivateWindowButton from Overview Mode

ash/wm/overview/overview_window_targeter.h

Index: ash/wm/overview/overview_window_targeter.h
diff --git a/ash/wm/overview/overview_window_targeter.h b/ash/wm/overview/overview_window_targeter.h
new file mode 100644
index 0000000000000000000000000000000000000000..90e9ad564d8091dd51e1b30619496da8818f0b69
--- /dev/null
+++ b/ash/wm/overview/overview_window_targeter.h
@@ -0,0 +1,42 @@
+// Copyright 2015 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.
+
+#ifndef ASH_WM_OVERVIEW_OVERVIEW_WINDOW_TARGETER_H_
+#define ASH_WM_OVERVIEW_OVERVIEW_WINDOW_TARGETER_H_
+
+#include "ui/aura/window_targeter.h"
+#include "ui/gfx/geometry/rect.h"
+
+namespace ash {
+
+// A targeter for the windows in the overview. Avoids propagating events to
+// window children and uses the WindowSelectorItem bounds to check for hits.

[tdanderson, 2015/01/21 17:24:24]

It looks like this targeter can be completely generic - let's chat offline.

[Nina, 2015/01/22 19:44:32]

Acknowledged.

+class OverviewWindowTargeter : public aura::WindowTargeter {
+ public:
+  explicit OverviewWindowTargeter(aura::Window* target);
+
+  ~OverviewWindowTargeter() override;
+
+  // Sets the targetable bounds in the root window coordinates.

[tdanderson, 2015/01/21 17:24:24]

You should instead mention the coordinate space of |bounds_| where you declare
it (i.e., line 33).

[Nina, 2015/01/22 19:44:32]

Done.

+  void set_bounds(const gfx::Rect& bounds) { bounds_ = bounds; }
+
+  // ui::EventTargeter:
+  ui::EventTarget* FindTargetForLocatedEvent(ui::EventTarget* target,
+                                             ui::LocatedEvent* event) override;
+
+ protected:
+  bool EventLocationInsideBounds(ui::EventTarget* target,
+                                 const ui::LocatedEvent& event) const override;
+
+ private:
+  // Bounds used to check for event hits.
+  gfx::Rect bounds_;
+
+  // Target to which events are redirected.
+  aura::Window* target_;
+};
+
+}  // namespace ash
+
+#endif  // ASH_WM_OVERVIEW_OVERVIEW_WINDOW_TARGETER_H_