Cocoa: Support constrained windows for platform apps

chrome/browser/ui/cocoa/extensions/shell_window_cocoa.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 "chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h"
 
 #include "base/mac/mac_util.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/cocoa/browser_window_utils.h"
 #include "chrome/browser/ui/cocoa/extensions/extension_view_mac.h"
+#include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/common/extensions/extension.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #import "ui/base/cocoa/underlay_opengl_hosting_window.h"
 
 @interface NSWindow (NSPrivateApis)
 - (void)setBottomCornerRounded:(BOOL)rounded;
 @end
 
@@ skipping 19 matching lines @@
 - (void)windowDidBecomeKey:(NSNotification*)notification {
   if (shellWindow_)
     shellWindow_->WindowDidBecomeKey();
 }
 
 - (void)windowDidResignKey:(NSNotification*)notification {
   if (shellWindow_)
     shellWindow_->WindowDidResignKey();
 }
 
+- (void)gtm_systemRequestsVisibilityForView:(NSView*)view {
+  [[self window] makeKeyAndOrderFront:self];
+}
+
+- (void)attachConstrainedWindow:(ConstrainedWindowMac*)window {
+  if (!sheetController_.get()) {
+    sheetController_.reset([[GTMWindowSheetController alloc]
+        initWithWindow:[self window]
+              delegate:self]);
+  }
+
+  NSView* tabContentsView =
+      [window->owner()->web_contents()->GetNativeView() superview];
+  window->delegate()->RunSheet(sheetController_, tabContentsView);
+}
+
+- (void)removeConstrainedWindow:(ConstrainedWindowMac*)window {
+}
+
+- (BOOL)canAttachConstrainedWindow {
+  return YES;
+}
+
 @end
 
 @interface ShellNSWindow : UnderlayOpenGLHostingWindow
 
 - (void)drawCustomFrameRect:(NSRect)rect forView:(NSView*)view;
 
 @end
 
 // This is really a method on NSGrayFrame, so it should only be called on the
 // view passed into -[NSWindow drawCustomFrameRect:forView:].
@@ skipping 358 matching lines @@
   return [window_controller_ window];
 }
 
 // static
 ShellWindow* ShellWindow::CreateImpl(Profile* profile,
                                      const extensions::Extension* extension,
                                      const GURL& url,
                                      const ShellWindow::CreateParams& params) {
   return new ShellWindowCocoa(profile, extension, url, params);
 }