Remove unused |context| from GetDefaultParent().

extensions/shell/browser/shell_desktop_controller_aura.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 "extensions/shell/browser/shell_desktop_controller_aura.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 222 matching lines @@
   // Create a copy of the window vector, because closing the windows will
   // trigger RemoveAppWindow, which will invalidate the iterator.
   // This vector should be small enough that this should not be an issue.
   std::vector<AppWindow*> app_windows(app_windows_);
   for (AppWindow* app_window : app_windows)
     app_window->GetBaseWindow()->Close();  // Close() deletes |app_window|.
   app_windows_.clear();
 }
 
 aura::Window* ShellDesktopControllerAura::GetDefaultParent(
-    aura::Window* context,
     aura::Window* window,
     const gfx::Rect& bounds) {
   return host_->window();
 }
 
 #if defined(OS_CHROMEOS)
 void ShellDesktopControllerAura::PowerButtonEventReceived(
     bool down,
     const base::TimeTicks& timestamp) {
   if (down) {
@@ skipping 137 matching lines @@
   if (displays.empty())
     return gfx::Size();
   const display::DisplayMode* mode = displays[0]->current_mode();
   return mode ? mode->size() : gfx::Size();
 #else
   return gfx::Size();
 #endif
 }
 
 }  // namespace extensions