aura: Draw drop shadows under browsers and menus.

chrome/browser/ui/views/frame/browser_frame_aura.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/views/frame/browser_frame_aura.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/browser/ui/views/frame/browser_non_client_frame_view_aura.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "grit/theme_resources_standard.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/aura/aura_switches.h"
+#include "ui/aura/window.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/theme_provider.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/compositor/layer.h"
 #include "ui/gfx/font.h"
 #include "views/background.h"
 
 namespace {
 
 // The content left/right images have a shadow built into them.
@@ skipping 136 matching lines @@
     : views::NativeWidgetAura(browser_frame),
       browser_view_(browser_view),
       browser_frame_(browser_frame) {
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kAuraWindows)) {
     // Aura paints layers behind this view, so this must be a layer also.
     // TODO: see if we can avoid this, layers are expensive.
     browser_view_->SetPaintToLayer(true);
     browser_view_->layer()->SetFillsBoundsOpaquely(false);
     // Background only needed for Aura-style windows.
     browser_view_->set_background(new ToolbarBackground(browser_view));
+  } else {
+    GetNativeWindow()->SetShadowVisible(true);

[Daniel Erat, 2011/11/15 01:05:04]

Oshima recommended setting a new property for this, but as it's currently only
getting consumed by aura::Window, I figured that it's a bit cleaner to just add
a SetShadowVisible() method.

   }
 }
 
 BrowserFrameAura::~BrowserFrameAura() {
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // BrowserFrameAura, views::NativeWidgetAura overrides:
 
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 25 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeBrowserFrame, public:
 
 // static
 NativeBrowserFrame* NativeBrowserFrame::CreateNativeBrowserFrame(
     BrowserFrame* browser_frame,
     BrowserView* browser_view) {
   return new BrowserFrameAura(browser_frame, browser_view);
 }