Move screen capturers to remoting/capturer.

remoting/base/util.h

Index: remoting/base/util.h
diff --git a/remoting/base/util.h b/remoting/base/util.h
index a627c921d80aa92905522d56a3d39a11d678e942..e6abe0fa98c54441170e8582e8586e8b9fe620b2 100644
--- a/remoting/base/util.h
+++ b/remoting/base/util.h
@@ -74,14 +74,7 @@ SkIRect ScaleRect(const SkIRect& rect,
                   const SkISize& in_size,
                   const SkISize& out_size);
 
-// Copy pixels in the rectangle from source to destination.
-void CopyRect(const uint8* src_plane,
-              int src_plane_stride,
-              uint8* dest_plane,
-              int dest_plane_stride,
-              int bytes_per_pixel,
-              const SkIRect& rect);
-
+// Copy content of a rectangle in a RGB32 image.
 void CopyRGB32Rect(const uint8* source_buffer,
                    int source_stride,
                    const SkIRect& source_buffer_rect,