Replace media::Limits struct with media::limits namespace and update documentation.

media/base/video_decoder_config.cc

 // Copyright (c) 2011 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 "media/base/video_decoder_config.h"
 
 #include <cmath>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 102 matching lines @@
   natural_size_.SetSize(width & ~1, height);
 }
 
 bool VideoDecoderConfig::IsValidConfig() const {
   return codec_ != kUnknownVideoCodec &&
       format_ != VideoFrame::INVALID &&
       frame_rate_numerator_ > 0 &&
       frame_rate_denominator_ > 0 &&
       aspect_ratio_numerator_ > 0 &&
       aspect_ratio_denominator_ > 0 &&
-      natural_size_.width() <= Limits::kMaxDimension &&
-      natural_size_.height() <= Limits::kMaxDimension &&
-      natural_size_.GetArea() <= Limits::kMaxCanvas;
+      natural_size_.width() <= limits::kMaxDimension &&
+      natural_size_.height() <= limits::kMaxDimension &&
+      natural_size_.GetArea() <= limits::kMaxCanvas;
 }
 
 VideoCodec VideoDecoderConfig::codec() const {
   return codec_;
 }
 
 VideoFrame::Format VideoDecoderConfig::format() const {
   return format_;
 }
 
@@ skipping 27 matching lines @@
 
 uint8* VideoDecoderConfig::extra_data() const {
   return extra_data_.get();
 }
 
 size_t VideoDecoderConfig::extra_data_size() const {
   return extra_data_size_;
 }
 
 }  // namespace media