Collect information on the dump when GetDC fails.

base/win/scoped_hdc.h

 // 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.
 
 #ifndef BASE_WIN_SCOPED_HDC_H_
 #define BASE_WIN_SCOPED_HDC_H_
 
 #include <windows.h>
 
+#include "base/debug/gdi_debug_util_win.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/win/scoped_handle.h"
 
 namespace base {
 namespace win {
 
 // Like ScopedHandle but for HDC.  Only use this on HDCs returned from
 // GetDC.
 class ScopedGetDC {
  public:
   explicit ScopedGetDC(HWND hwnd)
       : hwnd_(hwnd),
         hdc_(GetDC(hwnd)) {
     if (hwnd_) {
       DCHECK(IsWindow(hwnd_));
       DCHECK(hdc_);
     } else {
       // If GetDC(NULL) returns NULL, something really bad has happened, like
       // GDI handle exhaustion.  In this case Chrome is going to behave badly no
       // matter what, so we may as well just force a crash now.
-      CHECK(hdc_);
+      if (!hdc_)
+        base::debug::CollectGDIUsageAndDie();
     }
   }
 
   ~ScopedGetDC() {
     if (hdc_)
       ReleaseDC(hwnd_, hdc_);
   }
 
   operator HDC() { return hdc_; }
 
@@ skipping 25 matching lines @@
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(CreateDCTraits);
 };
 
 typedef GenericScopedHandle<CreateDCTraits, DummyVerifierTraits> ScopedCreateDC;
 
 }  // namespace win
 }  // namespace base
 
 #endif  // BASE_WIN_SCOPED_HDC_H_