Mac ÜC: Make resize smooth

content/browser/compositor/browser_compositor_view_mac.mm

 // Copyright 2014 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/compositor/browser_compositor_view_mac.h"
 
 #include "base/debug/trace_event.h"
 #include "base/lazy_instance.h"
 #include "content/browser/compositor/browser_compositor_view_private_mac.h"
 
@@ skipping 58 matching lines @@
   swap(g_recyclable_cocoa_view.Get(), cocoa_view_);
 
   // If there are no placeholders allocated, destroy the recyclable
   // BrowserCompositorViewCocoa that we just populated.
   if (!g_placeholder_count) {
     [g_recyclable_cocoa_view.Get() destroyCompositor];
     g_recyclable_cocoa_view.Get().reset();
   }
 }
 
+NSView* BrowserCompositorViewMac::GetView() const {
+  return cocoa_view_;
+}
+
 ui::Compositor* BrowserCompositorViewMac::GetCompositor() const {
-  DCHECK(cocoa_view_);
   return [cocoa_view_ compositor];
 }
 
+bool BrowserCompositorViewMac::HasFrameWithSizeInDIP(
+    const gfx::Size& desired_size_in_dip) const {
+  return [cocoa_view_ hasFrameWithSizeInDIP:desired_size_in_dip];
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // BrowserCompositorViewPlaceholderMac
 
 BrowserCompositorViewPlaceholderMac::BrowserCompositorViewPlaceholderMac() {
   g_placeholder_count += 1;
 }
 
 BrowserCompositorViewPlaceholderMac::~BrowserCompositorViewPlaceholderMac() {
   DCHECK_GT(g_placeholder_count, 0u);
   g_placeholder_count -= 1;
 
   // If there are no placeholders allocated, destroy the recyclable
   // BrowserCompositorViewCocoa.
   if (!g_placeholder_count) {
     [g_recyclable_cocoa_view.Get() destroyCompositor];
     g_recyclable_cocoa_view.Get().reset();
   }
 }
 
 }  // namespace content