Fix window shadows.

content/browser/renderer_host/accelerated_plugin_view_mac_unittest.mm

-// 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 "content/browser/renderer_host/accelerated_plugin_view_mac.h"
-
-#include "base/logging.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "testing/platform_test.h"
-#import "ui/base/cocoa/underlay_opengl_hosting_window.h"
-
-@interface UnderlayCountingWindow : NSWindow<UnderlayableSurface> {
- @private
-  int underlayCount_;
-}
-@property (readonly, nonatomic) int underlayCount;
-- (void)underlaySurfaceAdded;
-- (void)underlaySurfaceRemoved;
-@end
-
-@implementation UnderlayCountingWindow
-@synthesize underlayCount = underlayCount_;
-
-- (void)underlaySurfaceAdded {
-  DCHECK_GE(underlayCount_, 0);
-  ++underlayCount_;
-}
-
-- (void)underlaySurfaceRemoved {
-  --underlayCount_;
-  DCHECK_GE(underlayCount_, 0);
-}
-@end
-
-class AcceleratedPluginViewTest : public PlatformTest {
- protected:
-  AcceleratedPluginViewTest() {}
-
-  UnderlayCountingWindow* StubUnderlayWindow() {
-    UnderlayCountingWindow* window = [[[UnderlayCountingWindow alloc]
-        initWithContentRect:NSMakeRect(20, 20, 300, 200)
-                  styleMask:NSBorderlessWindowMask
-                    backing:NSBackingStoreBuffered
-                      defer:NO] autorelease];
-    [window orderFront:nil];
-    return window;
-  }
-
-  AcceleratedPluginView* StubAcceleratedPluginView() {
-    // It truns out the rwhv and the plugin handle are not necessary for
-    // this test, and AcceleratedPluginView doesn't crash without them.
-    AcceleratedPluginView* view = [[[AcceleratedPluginView alloc]
-        initWithRenderWidgetHostViewMac:NULL
-                           pluginHandle:0] autorelease];
-    return view;
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(AcceleratedPluginViewTest);
-};
-
-TEST_F(AcceleratedPluginViewTest, Basic) {
-}
-
-TEST_F(AcceleratedPluginViewTest, BasicAdding) {
-  AcceleratedPluginView* view = StubAcceleratedPluginView();
-
-  UnderlayCountingWindow* window = StubUnderlayWindow();
-  EXPECT_EQ(0, [window underlayCount]);
-
-  [[window contentView] addSubview:view];
-  EXPECT_EQ(1, [window underlayCount]);
-
-  [view removeFromSuperview];
-  EXPECT_EQ(0, [window underlayCount]);
-}
-
-TEST_F(AcceleratedPluginViewTest, MoveBetweenWindows) {
-  AcceleratedPluginView* view = StubAcceleratedPluginView();
-
-  UnderlayCountingWindow* window1 = StubUnderlayWindow();
-  UnderlayCountingWindow* window2 = StubUnderlayWindow();
-  EXPECT_EQ(0, [window1 underlayCount]);
-  EXPECT_EQ(0, [window2 underlayCount]);
-
-  [[window1 contentView] addSubview:view];
-  EXPECT_EQ(1, [window1 underlayCount]);
-  EXPECT_EQ(0, [window2 underlayCount]);
-
-  [[window2 contentView] addSubview:view];
-  EXPECT_EQ(0, [window1 underlayCount]);
-  EXPECT_EQ(1, [window2 underlayCount]);
-}
-
-TEST_F(AcceleratedPluginViewTest, HiddenWhenAdding) {
-  AcceleratedPluginView* view = StubAcceleratedPluginView();
-  [view setHidden:YES];
-
-  UnderlayCountingWindow* window = StubUnderlayWindow();
-  EXPECT_EQ(0, [window underlayCount]);
-
-  [[window contentView] addSubview:view];
-  EXPECT_EQ(0, [window underlayCount]);
-
-  [view setHidden:NO];
-  EXPECT_EQ(1, [window underlayCount]);
-
-  [view setHidden:YES];
-  EXPECT_EQ(0, [window underlayCount]);
-
-  [view removeFromSuperview];
-  EXPECT_EQ(0, [window underlayCount]);
-}
-
-TEST_F(AcceleratedPluginViewTest, HiddenAfterAdding) {
-  AcceleratedPluginView* view = StubAcceleratedPluginView();
-
-  UnderlayCountingWindow* window = StubUnderlayWindow();
-  EXPECT_EQ(0, [window underlayCount]);
-
-  [[window contentView] addSubview:view];
-  EXPECT_EQ(1, [window underlayCount]);
-
-  [view setHidden:YES];
-  EXPECT_EQ(0, [window underlayCount]);
-
-  [view setHidden:NO];
-  EXPECT_EQ(1, [window underlayCount]);
-
-  [view removeFromSuperview];
-  EXPECT_EQ(0, [window underlayCount]);
-}
-
-TEST_F(AcceleratedPluginViewTest, MoveBetweenWindowsWithHiding) {
-  AcceleratedPluginView* view = StubAcceleratedPluginView();
-  [view setHidden:YES];
-
-  UnderlayCountingWindow* window1 = StubUnderlayWindow();
-  UnderlayCountingWindow* window2 = StubUnderlayWindow();
-  EXPECT_EQ(0, [window1 underlayCount]);
-  EXPECT_EQ(0, [window2 underlayCount]);
-
-  [[window1 contentView] addSubview:view];
-  EXPECT_EQ(0, [window1 underlayCount]);
-  EXPECT_EQ(0, [window2 underlayCount]);
-
-  [view setHidden:NO];
-  EXPECT_EQ(1, [window1 underlayCount]);
-  EXPECT_EQ(0, [window2 underlayCount]);
-
-  // Move view while it's visible.
-  [[window2 contentView] addSubview:view];
-  EXPECT_EQ(0, [window1 underlayCount]);
-  EXPECT_EQ(1, [window2 underlayCount]);
-
-  [view setHidden:YES];
-  EXPECT_EQ(0, [window1 underlayCount]);
-  EXPECT_EQ(0, [window2 underlayCount]);
-
-  // Move view while it's hidden.
-  [[window1 contentView] addSubview:view];
-  EXPECT_EQ(0, [window1 underlayCount]);
-  EXPECT_EQ(0, [window2 underlayCount]);
-
-  [view setHidden:NO];
-  EXPECT_EQ(1, [window1 underlayCount]);
-  EXPECT_EQ(0, [window2 underlayCount]);
-}
-
-// Regression test for http://crbug.com/81737
-TEST_F(AcceleratedPluginViewTest, RemoveWithHiddenParent) {
-  AcceleratedPluginView* view = StubAcceleratedPluginView();
-
-  NSView* parent =
-    [[[NSView alloc] initWithFrame:NSMakeRect(0, 0, 100, 100)] autorelease];
-  [parent addSubview:view];
-
-  UnderlayCountingWindow* window = StubUnderlayWindow();
-  EXPECT_EQ(0, [window underlayCount]);
-
-  [[window contentView] addSubview:parent];
-  EXPECT_EQ(1, [window underlayCount]);
-
-  [parent setHidden:YES];
-  EXPECT_EQ(0, [window underlayCount]);
-
-  [parent removeFromSuperview];
-  EXPECT_EQ(0, [window underlayCount]);
-}