Do not use SkBitmap.deepCopyTo(), it was removed

Copy of the `sk_tool_utils::copy_to()` is used instead.
Probsbly we should use the function itself.

atom/common/api/atom_api_clipboard.cc

@@ -8,10 +8,47 @@
 #include "atom/common/native_mate_converters/string16_converter.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkImageInfo.h"
+#include "third_party/skia/include/core/SkPixmap.h"
 #include "ui/base/clipboard/scoped_clipboard_writer.h"
 
 #include "atom/common/node_includes.h"
 
+namespace {
+
+// TODO(alexeykuzmin): It is a copy of `sk_tool_utils::copy_to()`,
+// use the original function if possible, skia doesn't export it.
+bool copy_to(SkBitmap* dst, SkColorType dstColorType, const SkBitmap& src) {
+  SkPixmap srcPM;
+  if (!src.peekPixels(&srcPM)) {
+    return false;
+  }
+
+  SkBitmap tmpDst;
+  SkImageInfo dstInfo = srcPM.info().makeColorType(dstColorType);
+  if (!tmpDst.setInfo(dstInfo)) {
+    return false;
+  }
+
+  if (!tmpDst.tryAllocPixels()) {
+    return false;
+  }
+
+  SkPixmap dstPM;
+  if (!tmpDst.peekPixels(&dstPM)) {
+    return false;
+  }
+
+  if (!srcPM.readPixels(dstPM)) {
+    return false;
+  }
+
+  dst->swap(tmpDst);
+  return true;
+}
+
+}  // namespace
+
 namespace atom {
 
 namespace api {
@@ -167,12 +204,13 @@ gfx::Image Clipboard::ReadImage(mate::Arguments* args) {
 
 void Clipboard::WriteImage(const gfx::Image& image, mate::Arguments* args) {
   ui::ScopedClipboardWriter writer(GetClipboardType(args));
+  SkBitmap orig = image.AsBitmap();
   SkBitmap bmp;
-  // TODO(ferreus): Replace with sk_tools_utils::copy_to (chrome60)
+
-  if (image.AsBitmap().deepCopyTo(&bmp)) {
+  if (copy_to(&bmp, orig.colorType(), orig)) {
     writer.WriteImage(bmp);
   } else {
-    writer.WriteImage(image.AsBitmap());
+    writer.WriteImage(orig);
   }
 }