Remove Tabpose feature on mac, and supporting infrastructure (PaintAtSize)

chrome/browser/ui/cocoa/browser_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/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 582 matching lines @@
 }
 
 void BrowserWindowCocoa::Copy() {
   [NSApp sendAction:@selector(copy:) to:nil from:nil];
 }
 
 void BrowserWindowCocoa::Paste() {
   [NSApp sendAction:@selector(paste:) to:nil from:nil];
 }
 
-void BrowserWindowCocoa::OpenTabpose() {
-  [controller_ openTabpose];
-}
-
 void BrowserWindowCocoa::EnterFullscreenWithChrome() {
   // This method cannot be called if simplified fullscreen is enabled.
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   DCHECK(!command_line->HasSwitch(switches::kEnableSimplifiedFullscreen));
 
   CHECK(chrome::mac::SupportsSystemFullscreen());
   if ([controller_ inPresentationMode])
     [controller_ exitPresentationMode];
   else
     [controller_ enterFullscreen];
@@ skipping 135 matching lines @@
   // further, both by another H, i.e. WebContentsView's height becomes
   // A.height() + H and RenderWidgetHostView's height becomes A.height() + 2H.
   // Strangely, the RenderWidgetHostView for the previous navigation entry also
   // gets enlarged by H.
   // I believe these "automatic" resizing are caused by setAutoresizingMask of
   // of the cocoa view in WebContentsViewMac, which defeats the purpose of
   // WebContentsDelegate::GetSizeForNewRenderView i.e. to prevent resizing of
   // RenderWidgetHostView in (2) and (3).
   return 0;
 }