SkBitmap and SkPixelRef no longer need lock/unlock

skia/ext/image_operations.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.
 
 #define _USE_MATH_DEFINES
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 342 matching lines @@
   // return empty.
   if (source.width() < 1 || source.height() < 1 ||
       dest_width < 1 || dest_height < 1)
     return SkBitmap();
 
   method = ResizeMethodToAlgorithmMethod(method);
   // Check that we deal with an "algorithm methods" from this point onward.
   SkASSERT((ImageOperations::RESIZE_FIRST_ALGORITHM_METHOD <= method) &&
            (method <= ImageOperations::RESIZE_LAST_ALGORITHM_METHOD));
 
-  SkAutoLockPixels locker(source);
   if (!source.readyToDraw() || source.colorType() != kN32_SkColorType)
     return SkBitmap();
 
   ResizeFilter filter(method, source.width(), source.height(),
                       dest_width, dest_height, dest_subset);
 
   // Get a source bitmap encompassing this touched area. We construct the
   // offsets and row strides such that it looks like a new bitmap, while
   // referring to the old data.
   const uint8_t* source_subset =
@@ skipping 22 matching lines @@
 SkBitmap ImageOperations::Resize(const SkBitmap& source,
                                  ResizeMethod method,
                                  int dest_width, int dest_height,
                                  SkBitmap::Allocator* allocator) {
   SkIRect dest_subset = { 0, 0, dest_width, dest_height };
   return Resize(source, method, dest_width, dest_height, dest_subset,
                 allocator);
 }
 
 }  // namespace skia