Fixes tab dragging out of a window with maximzied bounds

ash/wm/default_state.cc

Index: ash/wm/default_state.cc
diff --git a/ash/wm/default_state.cc b/ash/wm/default_state.cc
index 61a3dc6b09120e7fcb0529e2ee51659898c6b010..7082b4170c8bc33bbb459512967ac98afff618eb 100644
--- a/ash/wm/default_state.cc
+++ b/ash/wm/default_state.cc
@@ -31,6 +31,11 @@ namespace {
 // must be visible when the window is added to the workspace.
 const float kMinimumPercentOnScreenArea = 0.3f;
 
+// When a window that has restore bounds at least as large as a work area is
+// unmaximized inset the bounds slightly so that they are not exactly same. This

[msw, 2015/06/05 17:20:51]

nit: comma here: "unmaximized," and "exactly the same"
(maybe just move the other comment here, they seem redundant)

[varkha, 2015/06/05 17:55:28]

Done.

+// makes it easier to resize the window.
+const int kMaximizedWindowInset = 10;  // Pixels.
+
 bool IsMinimizedWindowState(const WindowStateType state_type) {
   return state_type == WINDOW_STATE_TYPE_MINIMIZED ||
          state_type == WINDOW_STATE_TYPE_DOCKED_MINIMIZED;
@@ -646,7 +651,8 @@ void DefaultState::UpdateBoundsFromState(WindowState* window_state,
           // Inset the bounds slightly so that they are not exactly same as
           // the work area bounds and it is easier to resize the window.
           bounds_in_parent = work_area_in_parent;
-          bounds_in_parent.Inset(10, 10, 10, 10);
+          bounds_in_parent.Inset(kMaximizedWindowInset, kMaximizedWindowInset,
+                                 kMaximizedWindowInset, kMaximizedWindowInset);
         }
       } else {
         bounds_in_parent = window->bounds();