Revert "Enable DCHECK in GetBitmap on WIN"

ui/gfx/image/image_skia.cc

 // 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 "ui/gfx/image/image_skia.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 
@@ skipping 367 matching lines @@
   storage_->image_reps().push_back(image_rep);
 }
 
 SkBitmap& ImageSkia::GetBitmap() const {
   if (isNull()) {
     // Callers expect a ImageSkiaRep even if it is |isNull()|.
     // TODO(pkotwicz): Fix this.
     return NullImageRep().mutable_sk_bitmap();
   }
 
+  // TODO(oshima): This made a few tests flaky on Windows.
+  // Fix the root cause and re-enable this. crbug.com/145623.
+#if !defined(OS_WIN)
   CHECK(CanRead());
+#endif
 
   ImageSkiaReps::iterator it =
       storage_->FindRepresentation(ui::SCALE_FACTOR_100P, true);
   if (it != storage_->image_reps().end())
     return it->mutable_sk_bitmap();
   return NullImageRep().mutable_sk_bitmap();
 }
 
 bool ImageSkia::CanRead() const {
   return !storage_ || storage_->CanRead();
 }
 
 bool ImageSkia::CanModify() const {
   return !storage_ || storage_->CanModify();
 }
 
 void ImageSkia::DetachStorageFromThread() {
   if (storage_)
     storage_->DetachFromThread();
 }
 
 }  // namespace gfx