Move convolver, image_operations, and skia_utils from base/gfx to skia/ext....

skia/ext/convolver.h

 // Copyright (c) 2006-2008 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_GFX_CONVOLVER_H__
-#define BASE_GFX_CONVOLVER_H__
+#ifndef SKIA_EXT_CONVOLVER_H_
+#define SKIA_EXT_CONVOLVER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 
 // avoid confusion with Mac OS X's math library (Carbon)
 #if defined(OS_MACOSX)
 #undef FloatToFixed
 #endif
 
-namespace gfx {
+namespace skia {
 
 // Represents a filter in one dimension. Each output pixel has one entry in this
 // object for the filter values contributing to it. You build up the filter
 // list by calling AddFilter for each output pixel (in order).
 //
 // We do 2-dimensional convolusion by first convolving each row by one
 // ConvolusionFilter1D, then convolving each column by another one.
 //
 // Entries are stored in fixed point, shifted left by kShiftBits.
 class ConvolusionFilter1D {
@@ skipping 96 matching lines @@
 //
 // The layout in memory is assumed to be 4-bytes per pixel in B-G-R-A order
 // (this is ARGB when loaded into 32-bit words on a little-endian machine).
 void BGRAConvolve2D(const uint8* source_data,
                     int source_byte_row_stride,
                     bool source_has_alpha,
                     const ConvolusionFilter1D& xfilter,
                     const ConvolusionFilter1D& yfilter,
                     uint8* output);
 
-}  // namespace gfx
+}  // namespace skia
 
-#endif  // BASE_GFX_CONVOLVER_H__
+#endif  // SKIA_EXT_CONVOLVER_H_