Adding experimental maximize mode (behind a flag)

ash/wm/property_util.cc

Index: ash/wm/property_util.cc
diff --git a/ash/wm/property_util.cc b/ash/wm/property_util.cc
index d1240b68154304c65a8b597e9340aca37f0fb64c..8d3cc5f45b1ed787006262f400a42dce868b2c8d 100644
--- a/ash/wm/property_util.cc
+++ b/ash/wm/property_util.cc
@@ -51,6 +51,14 @@ bool GetTrackedByWorkspace(const aura::Window* window) {
   return window->GetProperty(internal::kWindowTrackedByWorkspaceKey);
 }
 
+void SetCanBeMaximizedByWorkspace(aura::Window* window, bool value) {
+  window->SetProperty(internal::kWindowCanBeMaximizedByWorkspaceKey, value);
+}
+
+bool GetCanBeMaximizedByWorkspace(const aura::Window* window) {
+  return window->GetProperty(internal::kWindowCanBeMaximizedByWorkspaceKey);
+}
+
 void SetIgnoredByShelf(aura::Window* window, bool value) {
   window->SetProperty(internal::kIgnoredByShelfKey, value);
 }