From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Henri Torgemane <henrit@gmail.com>
Date: Thu, 23 Sep 2021 21:30:33 -0500
Subject: add ui::ScopedCliboardWriter::WriteUnsafeRawData

This restores some ability to write to the clipboard using raw formats, which
was removed as part of the Raw Clipboard API scrubbing.
https://bugs.chromium.org/p/chromium/issues/detail?id=1217643

diff --git a/ui/base/clipboard/scoped_clipboard_writer.cc b/ui/base/clipboard/scoped_clipboard_writer.cc
index 3009acd40eee36bc3d4dd8642f0ce5e6476da973..1d52ce84184a3ca94e4e0f04d331bf56d75e07d0 100644
--- a/ui/base/clipboard/scoped_clipboard_writer.cc
+++ b/ui/base/clipboard/scoped_clipboard_writer.cc
@@ -227,6 +227,16 @@ void ScopedClipboardWriter::WriteEncodedDataTransferEndpointForTesting(
 }
 #endif  // BUILDFLAG(IS_CHROMEOS_ASH)
 
+void ScopedClipboardWriter::WriteUnsafeRawData(const std::u16string& format,
+                                               mojo_base::BigBuffer data) {
+  static constexpr int kMaxRegisteredFormats = 100;
+  if (counter_ >= kMaxRegisteredFormats)
+    return;
+  counter_++;
+  platform_representations_.push_back(
+      {base::UTF16ToUTF8(format), std::move(data)});
+}
+
 void ScopedClipboardWriter::Reset() {
   objects_.clear();
   platform_representations_.clear();
diff --git a/ui/base/clipboard/scoped_clipboard_writer.h b/ui/base/clipboard/scoped_clipboard_writer.h
index c47909313da0d7cd8a2b3cd670327011af66e3fb..0d259c21507f38124dfa46aceeacfda76cfd4a38 100644
--- a/ui/base/clipboard/scoped_clipboard_writer.h
+++ b/ui/base/clipboard/scoped_clipboard_writer.h
@@ -84,6 +84,10 @@ class COMPONENT_EXPORT(UI_BASE_CLIPBOARD) ScopedClipboardWriter {
   // This is only used to write custom format data.
   void WriteData(const std::u16string& format, mojo_base::BigBuffer data);
 
+  // write raw (non-pickled) data to the clipboard
+  void WriteUnsafeRawData(const std::u16string& format,
+                          mojo_base::BigBuffer data);
+
   void WriteImage(const SkBitmap& bitmap);
 
 #if BUILDFLAG(IS_CHROMEOS_LACROS)