Add WM_EVENT_TRUSTED_PIN and WINDOW_STATE_TYPE_TRUSTED_PINNED to Ash.

components/exo/shell_surface.cc

 // 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.
 
 #include "components/exo/shell_surface.h"
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/wm/window_resizer.h"
 #include "ash/common/wm/window_state.h"
@@ skipping 386 matching lines @@
   if (!widget_)
     CreateShellSurfaceWidget(ui::SHOW_STATE_FULLSCREEN);
 
   // Note: This will ask client to configure its surface even if fullscreen
   // state doesn't change.
   ScopedConfigure scoped_configure(this, true);
   widget_->SetFullscreen(fullscreen);
   UpdateShelfStateForFullscreenChange(widget_);
 }
 
-void ShellSurface::SetPinned(bool pinned) {
+void ShellSurface::SetPinned(bool pinned, bool trusted) {
   TRACE_EVENT1("exo", "ShellSurface::SetPinned", "pinned", pinned);

[reveman, 2016/08/26 12:44:29]

nit: add trusted flag to trace event

[hirono, 2016/08/29 00:24:51]

Done.

 
   if (!widget_)
     CreateShellSurfaceWidget(ui::SHOW_STATE_NORMAL);
 
   // Note: This will ask client to configure its surface even if pinned
   // state doesn't change.
   ScopedConfigure scoped_configure(this, true);
   if (pinned) {
-    ash::wm::PinWindow(widget_->GetNativeWindow());
+    ash::wm::PinWindow(widget_->GetNativeWindow(), trusted);
   } else {
     // At the moment, we cannot just unpin the window state, due to ash
     // implementation. Instead, we call Restore() to unpin, if it is Pinned
     // state. In this implementation, we may loose the previous state,
     // if the previous state is fullscreen, etc.
     if (ash::wm::GetWindowState(widget_->GetNativeWindow())->IsPinned())
       widget_->Restore();
   }
 }
 
@@ skipping 859 matching lines @@
       shadow_overlay_->layer()->Add(shadow->layer());
       window->AddChild(shadow_overlay_);
       shadow_overlay_->Show();
     }
     shadow_overlay_->SetBounds(shadow_bounds);
     shadow->SetContentBounds(gfx::Rect(shadow_bounds.size()));
   }
 }
 
 }  // namespace exo