SkBitmap and SkPixelRef no longer need lock/unlock

content/browser/frame_host/navigation_controller_impl_unittest.cc

Index: content/browser/frame_host/navigation_controller_impl_unittest.cc
diff --git a/content/browser/frame_host/navigation_controller_impl_unittest.cc b/content/browser/frame_host/navigation_controller_impl_unittest.cc
index cb9f270f846858b12fcdd45c09e8fa77ac3f1c2e..87c6d48b9151d217bd2b828c8327b2395e1ab6cd 100644
--- a/content/browser/frame_host/navigation_controller_impl_unittest.cc
+++ b/content/browser/frame_host/navigation_controller_impl_unittest.cc
@@ -76,8 +76,6 @@ bool DoImagesMatch(const gfx::Image& a, const gfx::Image& b) {
       a_bitmap.height() != b_bitmap.height()) {
     return false;
   }
-  SkAutoLockPixels a_bitmap_lock(a_bitmap);
-  SkAutoLockPixels b_bitmap_lock(b_bitmap);
   return memcmp(a_bitmap.getPixels(),
                 b_bitmap.getPixels(),
                 a_bitmap.getSize()) == 0;