Clean up histogram'd media enum max values.

media/base/video_frame.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 MEDIA_BASE_VIDEO_FRAME_H_
 #define MEDIA_BASE_VIDEO_FRAME_H_
 
 #include "base/callback.h"
 #include "base/md5.h"
 #include "base/memory/shared_memory.h"
@@ skipping 34 matching lines @@
     UNKNOWN = 0,  // Unknown format value.
     YV12 = 1,  // 12bpp YVU planar 1x1 Y, 2x2 VU samples
     YV16 = 2,  // 16bpp YVU planar 1x1 Y, 2x1 VU samples
     I420 = 3,  // 12bpp YVU planar 1x1 Y, 2x2 UV samples.
     YV12A = 4,  // 20bpp YUVA planar 1x1 Y, 2x2 VU, 1x1 A samples.
 #if defined(VIDEO_HOLE)
     HOLE = 5,  // Hole frame.
 #endif  // defined(VIDEO_HOLE)
     NATIVE_TEXTURE = 6,  // Native texture.  Pixel-format agnostic.
     YV12J = 7,  // JPEG color range version of YV12
-    HISTOGRAM_MAX,  // Must always be greatest.
+    FORMAT_MAX = YV12J,  // Must always be equal to largest entry logged.
   };
 
   // Returns the name of a Format as a string.
   static std::string FormatToString(Format format);
 
   // Creates a new frame in system memory with given parameters. Buffers for
   // the frame are allocated but not initialized.
   // |coded_size| is the width and height of the frame data in pixels.
   // |visible_rect| is the visible portion of |coded_size|, after cropping (if
   // any) is applied.
@@ skipping 210 matching lines @@
   base::TimeDelta timestamp_;
 
   const bool end_of_stream_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoFrame);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_VIDEO_FRAME_H_