Prevent maximize/minimize/fullscreen-ize window in trusted pinned mode.

ash/common/wm/default_state.cc

Index: ash/common/wm/default_state.cc
diff --git a/ash/common/wm/default_state.cc b/ash/common/wm/default_state.cc
index d7e49d9579bb57bb16e98241e359238de9cefeaf..280b61a56d8b099b3bce3abdf3fe485a02a03eb5 100644
--- a/ash/common/wm/default_state.cc
+++ b/ash/common/wm/default_state.cc
@@ -179,14 +179,20 @@ void DefaultState::OnWMEvent(WindowState* window_state, const WMEvent* event) {
                             : WINDOW_STATE_TYPE_NORMAL;
       break;
     case WM_EVENT_MAXIMIZE:
+      if (window_state->IsTrustedPinned())
+        return;
       next_state_type = WINDOW_STATE_TYPE_MAXIMIZED;
       break;
     case WM_EVENT_MINIMIZE:
+      if (window_state->IsTrustedPinned())
+        return;
       next_state_type = current_state_type == WINDOW_STATE_TYPE_DOCKED
                             ? WINDOW_STATE_TYPE_DOCKED_MINIMIZED
                             : WINDOW_STATE_TYPE_MINIMIZED;
       break;
     case WM_EVENT_FULLSCREEN:
+      if (window_state->IsTrustedPinned())
+        return;
       next_state_type = WINDOW_STATE_TYPE_FULLSCREEN;
       break;
     case WM_EVENT_SNAP_LEFT:
@@ -293,6 +299,8 @@ bool DefaultState::ProcessCompoundEvents(WindowState* window_state,
 
   switch (event->type()) {
     case WM_EVENT_TOGGLE_MAXIMIZE_CAPTION:
+      if (window_state->IsTrustedPinned())
+        return true;
       if (window_state->IsFullscreen()) {
         const wm::WMEvent event(wm::WM_EVENT_TOGGLE_FULLSCREEN);
         window_state->OnWMEvent(&event);
@@ -304,6 +312,8 @@ bool DefaultState::ProcessCompoundEvents(WindowState* window_state,
       }
       return true;
     case WM_EVENT_TOGGLE_MAXIMIZE:
+      if (window_state->IsTrustedPinned())
+        return true;
       if (window_state->IsFullscreen()) {
         const wm::WMEvent event(wm::WM_EVENT_TOGGLE_FULLSCREEN);
         window_state->OnWMEvent(&event);
@@ -314,6 +324,8 @@ bool DefaultState::ProcessCompoundEvents(WindowState* window_state,
       }
       return true;
     case WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE: {
+      if (window_state->IsTrustedPinned())
+        return true;
       gfx::Rect work_area = GetDisplayWorkAreaBoundsInParent(window);
 
       // Maximize vertically if:
@@ -338,6 +350,9 @@ bool DefaultState::ProcessCompoundEvents(WindowState* window_state,
       return true;
     }
     case WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE: {
+      if (window_state->IsTrustedPinned())
+        return true;
+
       // Maximize horizontally if:
       // - The window does not have a max width defined.
       // - The window is snapped or has the normal state type.
@@ -371,6 +386,8 @@ bool DefaultState::ProcessCompoundEvents(WindowState* window_state,
       return true;
     }
     case WM_EVENT_TOGGLE_FULLSCREEN:
+      if (window_state->IsTrustedPinned())
+        return true;
       ToggleFullScreen(window_state, window_state->delegate());
       return true;
     case WM_EVENT_CYCLE_SNAP_DOCK_LEFT: