Show the cursor if it was hidden when starting partical screenshot.

ash/utility/partial_screenshot_controller.cc

 // Copyright 2014 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 "ash/utility/partial_screenshot_controller.h"
 
 #include <cmath>
 
 #include "ash/screenshot_delegate.h"
 #include "ash/shell.h"
@@ skipping 77 matching lines @@
 class PartialScreenshotController::ScopedCursorSetter {
  public:
   ScopedCursorSetter(::wm::CursorManager* cursor_manager,
                      gfx::NativeCursor cursor)
       : cursor_manager_(nullptr) {
     if (cursor_manager->IsCursorLocked())
       return;
     gfx::NativeCursor original_cursor = cursor_manager->GetCursor();
     cursor_manager_ = cursor_manager;
     cursor_manager_->SetCursor(cursor);
+    if (!cursor_manager_->IsCursorVisible())
+      cursor_manager_->ShowCursor();
     cursor_manager_->LockCursor();
-    // SetCursor does not make any effects at this point but it sets back to the
-    // original cursor when unlocked.
+    // SetCursor does not make any effects at this point but it sets back to
+    // the original cursor when unlocked.
     cursor_manager_->SetCursor(original_cursor);
   }
 
   ~ScopedCursorSetter() {
     if (cursor_manager_)
       cursor_manager_->UnlockCursor();
   }
 
  private:
   ::wm::CursorManager* cursor_manager_;
@@ skipping 145 matching lines @@
     return;
   Cancel();
 }
 
 void PartialScreenshotController::OnDisplayMetricsChanged(
     const gfx::Display& display,
     uint32_t changed_metrics) {
 }
 
 }  // namespace ash