Support error handling for Surface readbacks

content/public/browser/android/content_view_core.h

Index: content/public/browser/android/content_view_core.h
diff --git a/content/public/browser/android/content_view_core.h b/content/public/browser/android/content_view_core.h
index 2afd50efe8b77fa717e81c0ff949deef8898a5b5..f80020d1743cdaf5cdcc64152736cee146d8d5d0 100644
--- a/content/public/browser/android/content_view_core.h
+++ b/content/public/browser/android/content_view_core.h
@@ -11,6 +11,7 @@
 #include "base/callback.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
+#include "content/public/browser/readback_types.h"
 #include "third_party/skia/include/core/SkImageInfo.h"
 #include "ui/gfx/rect.h"
 
@@ -57,7 +58,7 @@ class CONTENT_EXPORT ContentViewCore {
       float scale,
       SkColorType color_type,
       gfx::Rect src_rect,
-      const base::Callback<void(bool, const SkBitmap&)>& result_callback) = 0;
+      ReadbackRequestCallback& result_callback) = 0;
   virtual float GetDpiScale() const = 0;
   virtual void PauseOrResumeGeolocation(bool should_pause) = 0;