Revert 67662 - FBTF: Remove unneeded headers from base/ (part 10)...

printing/image.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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 PRINTING_IMAGE_H_
 #define PRINTING_IMAGE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/logging.h"
 #include "gfx/size.h"
 #include "printing/native_metafile.h"
 
 class FilePath;
 
 namespace printing {
 
 // Lightweight raw-bitmap management. The image, once initialized, is immutable.
 // The main purpose is testing image contents.
 class Image {
@@ skipping 26 matching lines @@
   double PercentageDifferent(const Image& rhs) const;
 
   // Returns the 0x0RGB or 0xARGB value of the pixel at the given location.
   uint32 Color(uint32 color) const {
     if (ignore_alpha_)
       return color & 0xFFFFFF;  // Strip out A.
     else
       return color;
   }
 
-  uint32 pixel_at(int x, int y) const;
+  uint32 pixel_at(int x, int y) const {
+    DCHECK(x >= 0 && x < size_.width());
+    DCHECK(y >= 0 && y < size_.height());
+    const uint32* data = reinterpret_cast<const uint32*>(&*data_.begin());
+    const uint32* data_row = data + y * row_length_ / sizeof(uint32);
+    return Color(data_row[x]);
+  }
 
  private:
   // Construct from metafile.  This is kept internal since it's ambiguous what
   // kind of data is used (png, bmp, metafile etc).
   Image(const void* data, size_t size);
 
   bool LoadPng(const std::string& compressed);
 
   bool LoadMetafile(const std::string& data);
 
@@ skipping 12 matching lines @@
   // Flag to signal if the comparison functions should ignore the alpha channel.
   const bool ignore_alpha_;  // Currently always true.
 
   // Prevent operator= (this function has no implementation)
   Image& operator=(const Image& image);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_IMAGE_H_