Add window property for restore bounds when virtual keyboard is enabled.

ash/aura/wm_window_aura.cc

Index: ash/aura/wm_window_aura.cc
diff --git a/ash/aura/wm_window_aura.cc b/ash/aura/wm_window_aura.cc
index a46b56f50adc35e58407d139afa7ee42ab5f1221..25e258ec28ddb536d6c008ba24042610b1b49063 100644
--- a/ash/aura/wm_window_aura.cc
+++ b/ash/aura/wm_window_aura.cc
@@ -303,6 +303,14 @@ void WmWindowAura::SetIntProperty(WmWindowProperty key, int value) {
   NOTREACHED();
 }
 
+gfx::Rect* WmWindowAura::GetRectProperty(WmWindowProperty key) {
+  if (key == WmWindowProperty::VK_NEW_BOUNDS)
+    return window_->GetProperty(aura::client::kVKNewBoundsKey);
+
+  NOTREACHED();
+  return new gfx::Rect();
+}
+
 ShelfItemDetails* WmWindowAura::GetShelfItemDetails() {
   return window_->GetProperty(kShelfItemDetailsKey);
 }
@@ -780,6 +788,8 @@ void WmWindowAura::OnWindowPropertyChanged(aura::Window* window,
     wm_property = WmWindowProperty::TOP_VIEW_INSET;
   } else if (key == aura::client::kExcludeFromMruKey) {
     wm_property = WmWindowProperty::EXCLUDE_FROM_MRU;
+  } else if (key == aura::client::kVKNewBoundsKey) {
+    wm_property = WmWindowProperty::VK_NEW_BOUNDS;
   } else {
     return;
   }