Revert 183123

ui/base/clipboard/clipboard_mac.mm

Index: ui/base/clipboard/clipboard_mac.mm
===================================================================
--- ui/base/clipboard/clipboard_mac.mm	(revision 183210)
+++ ui/base/clipboard/clipboard_mac.mm	(working copy)
@@ -26,9 +26,6 @@
 
 namespace {
 
-// Source tag format type.
-NSString* const kSourceTagPboardType = @"org.chromium.source-tag-data";
-
 // Would be nice if this were in UTCoreTypes.h, but it isn't
 NSString* const kUTTypeURLName = @"public.url-name";
 
@@ -93,9 +90,7 @@
   DCHECK(CalledOnValidThread());
 }
 
-void Clipboard::WriteObjectsImpl(Buffer buffer,
-                                 const ObjectMap& objects,
-                                 SourceTag tag) {
+void Clipboard::WriteObjects(Buffer buffer, const ObjectMap& objects) {
   DCHECK(CalledOnValidThread());
   DCHECK_EQ(buffer, BUFFER_STANDARD);
 
@@ -106,7 +101,6 @@
        iter != objects.end(); ++iter) {
     DispatchObject(static_cast<ObjectType>(iter->first), iter->second);
   }
-  WriteSourceTag(tag);
 }
 
 void Clipboard::WriteText(const char* text_data, size_t text_len) {
@@ -218,13 +212,6 @@
       forType:format.ToNSString()];
 }
 
-void Clipboard::WriteSourceTag(SourceTag tag) {
-  if (tag != SourceTag()) {
-    ObjectMapParam binary = SourceTag2Binary(tag);
-    WriteData(GetSourceTagFormatType(), &binary[0], binary.size());
-  }
-}
-
 // Write an extra flavor that signifies WebKit was the last to modify the
 // pasteboard. This flavor has no data.
 void Clipboard::WriteWebSmartPaste() {
@@ -423,13 +410,6 @@
     result->assign(static_cast<const char*>([data bytes]), [data length]);
 }
 
-Clipboard::SourceTag Clipboard::ReadSourceTag(Buffer buffer) const {
-  DCHECK_EQ(buffer, BUFFER_STANDARD);
-  std::string result;
-  ReadData(GetSourceTagFormatType(), &result);
-  return Binary2SourceTag(result);
-}
-
 // static
 Clipboard::FormatType Clipboard::GetFormatType(
     const std::string& format_string) {
@@ -505,10 +485,4 @@
   return type;
 }
 
-// static
-const Clipboard::FormatType& Clipboard::GetSourceTagFormatType() {
-  CR_DEFINE_STATIC_LOCAL(FormatType, type, (kSourceTagPboardType));
-  return type;
-}
-
 }  // namespace ui