Removes the ability to close or resize the hung renderer dialog on Mac....

chrome/browser/cocoa/hung_renderer_controller.mm

 // Copyright (c) 2009 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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "app/l10n_util.h"
 #include "base/mac_util.h"
 #include "base/process_util.h"
 #include "base/sys_string_conversions.h"
@@ skipping 33 matching lines @@
   // This is easier than creating a localizer, since we only have one
   // string to modify.
   std::wstring productString = l10n_util::GetString(IDS_PRODUCT_NAME);
   [[self window] setTitle:base::SysWideToNSString(productString)];
 }
 
 - (IBAction)kill:(id)sender {
   if (hungContents_)
     base::KillProcess(hungContents_->process()->process().handle(),
                       ResultCodes::HUNG, false);
-  [[self window] performClose:nil];
+  // Cannot call performClose:, because the close button is disabled.
+  [self close];
 }
 
 - (IBAction)wait:(id)sender {
   if (hungContents_ && hungContents_->render_view_host())
     hungContents_->render_view_host()->RestartHangMonitorTimeout();
-  [[self window] performClose:nil];
+  // Cannot call performClose:, because the close button is disabled.
+  [self close];
 }
 
 - (int)numberOfRowsInTableView:(NSTableView *)aTableView {
   return hungRenderers_.size();
 }
 
 - (id)tableView:(NSTableView*)aTableView
       objectValueForTableColumn:(NSTableColumn*)column
             row:(int)rowIndex {
   // TODO(rohitrao): Add favicons.
@@ skipping 25 matching lines @@
   [tableView_ reloadData];
 
   [[self window] center];
   [self showWindow:self];
 }
 
 - (void)endForTabContents:(TabContents*)contents {
   DCHECK(contents);
   DCHECK(hungContents_);
   if (hungContents_ && hungContents_->process() == contents->process()) {
-    // If you switch tabs with the dialog open,
-    // HungRendererDialog::EndForTabContents() is called after the
-    // RWHV is hidden.  performClose: runs a nested message loop,
-    // during which the RWHV is drawn at least once, failing a DCHECK
-    // that ensures it is never drawn while hidden.  The workaround
-    // here is to call close, which closes the window immediately with
-    // no nested message loop.
+    // Cannot call performClose:, because the close button is disabled.
     [self close];
   }
 }
 
 @end
 
 @implementation HungRendererController (JustForTesting)
 - (NSButton*)killButton {
   return killButton_;
 }
@@ skipping 11 matching lines @@
                      initWithWindowNibName:@"HungRendererDialog"];
     [g_instance showForTabContents:contents];
   }
 }
 
 // static
 void HungRendererDialog::HideForTabContents(TabContents* contents) {
   if (!logging::DialogsAreSuppressed() && g_instance)
     [g_instance endForTabContents:contents];
 }