Workaround bad bitmaps in clibpoard code

content/renderer/webclipboard_impl.cc

Index: content/renderer/webclipboard_impl.cc
diff --git a/content/renderer/webclipboard_impl.cc b/content/renderer/webclipboard_impl.cc
index 317ec7d283d707849e2829b8035760fd2530d4b7..663d6f064f240aa56b3ae152a39cc8376816b741 100644
--- a/content/renderer/webclipboard_impl.cc
+++ b/content/renderer/webclipboard_impl.cc
@@ -155,8 +155,15 @@ void WebClipboardImpl::writeImage(const WebImage& image,
 
   if (!image.isNull()) {
     const SkBitmap& bitmap = image.getSkBitmap();
+    // WriteBitmapFromPixels expects 32-bit data.
+    DCHECK_EQ(bitmap.config(), SkBitmap::kARGB_8888_Config);
+
     SkAutoLockPixels locked(bitmap);
-    scw.WriteBitmapFromPixels(bitmap.getPixels(), image.size());
+    void *pixels = bitmap.getPixels();
+    // TODO(piman): this should not be NULL, but it is. crbug.com/369621
+    if (!pixels)
+      return;
+    scw.WriteBitmapFromPixels(pixels, image.size());
   }
 
   if (!url.isEmpty()) {