Move DIP translation from ui/aura to ui/compositor

ui/gfx/compositor/test/test_compositor_host_linux.cc

 // Copyright (c) 2012 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 "ui/gfx/compositor/test/test_compositor_host.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
@@ skipping 57 matching lines @@
       CopyFromParent,  // visual
       CWEventMask | CWOverrideRedirect, &swa);
   XMapWindow(display, window_);
 
   while (1) {
     XEvent event;
     XNextEvent(display, &event);
     if (event.type == MapNotify && event.xmap.window == window_)
       break;
   }
-  compositor_.reset(new ui::Compositor(this, window_, bounds_.size()));
+  compositor_.reset(new ui::Compositor(this, window_));
+  compositor_->WidgetScaleOrSizeChanged(1.0f, bounds_.size());
 }
 
 ui::Compositor* TestCompositorHostLinux::GetCompositor() {
   return compositor_.get();
 }
 
 void TestCompositorHostLinux::ScheduleDraw() {
   if (!method_factory_.HasWeakPtrs()) {
     MessageLoopForUI::current()->PostTask(
         FROM_HERE,
         base::Bind(&TestCompositorHostLinux::Draw,
                    method_factory_.GetWeakPtr()));
   }
 }
 
 void TestCompositorHostLinux::Draw() {
   if (compositor_.get())
     compositor_->Draw(false);
 }
 
 // static
 TestCompositorHost* TestCompositorHost::Create(const gfx::Rect& bounds) {
   return new TestCompositorHostLinux(bounds);
 }
 
 }  // namespace ui