Change the ChromiumPasteboard to have a notion of an alternate clipboard...

base/clipboard_mac.mm

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/clipboard.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/file_path.h"
 #include "base/logging.h"
@@ skipping 117 matching lines @@
 
 // Write an extra flavor that signifies WebKit was the last to modify the
 // pasteboard. This flavor has no data.
 void Clipboard::WriteWebSmartPaste() {
   NSPasteboard* pb = GetPasteboard();
   NSString* format = base::SysUTF8ToNSString(GetWebKitSmartPasteFormatType());
   [pb addTypes:[NSArray arrayWithObject:format] owner:nil];
   [pb setData:nil forType:format];
 }
 
-bool Clipboard::IsFormatAvailable(const Clipboard::FormatType& format) const {
+bool Clipboard::IsFormatAvailable(const Clipboard::FormatType& format,
+                                  Clipboard::Buffer buffer) const {
+  DCHECK_EQ(buffer, BUFFER_STANDARD);
   NSString* format_ns = base::SysUTF8ToNSString(format);
 
   NSPasteboard* pb = GetPasteboard();
   NSArray* types = [pb types];
 
   return [types containsObject:format_ns];
 }
 
-void Clipboard::ReadText(string16* result) const {
+void Clipboard::ReadText(Clipboard::Buffer buffer, string16* result) const {
+  DCHECK_EQ(buffer, BUFFER_STANDARD);
   NSPasteboard* pb = GetPasteboard();
   NSString* contents = [pb stringForType:NSStringPboardType];
 
   UTF8ToUTF16([contents UTF8String],
               [contents lengthOfBytesUsingEncoding:NSUTF8StringEncoding],
               result);
 }
 
-void Clipboard::ReadAsciiText(std::string* result) const {
+void Clipboard::ReadAsciiText(Clipboard::Buffer buffer,
+                              std::string* result) const {
+  DCHECK_EQ(buffer, BUFFER_STANDARD);
   NSPasteboard* pb = GetPasteboard();
   NSString* contents = [pb stringForType:NSStringPboardType];
 
   if (!contents)
     result->clear();
   else
     result->assign([contents UTF8String]);
 }
 
-void Clipboard::ReadHTML(string16* markup, std::string* src_url) const {
+void Clipboard::ReadHTML(Clipboard::Buffer buffer, string16* markup,
+                         std::string* src_url) const {
+  DCHECK_EQ(buffer, BUFFER_STANDARD);
   if (markup) {
     NSPasteboard* pb = GetPasteboard();
     NSArray *supportedTypes = [NSArray arrayWithObjects:NSHTMLPboardType,
                                                         NSStringPboardType,
                                                         nil];
     NSString *bestType = [pb availableTypeFromArray:supportedTypes];
     NSString* contents = [pb stringForType:bestType];
     UTF8ToUTF16([contents UTF8String],
                 [contents lengthOfBytesUsingEncoding:NSUTF8StringEncoding],
                 markup);
@@ skipping 98 matching lines @@
   static const std::string type = base::SysNSStringToUTF8(NSHTMLPboardType);
   return type;
 }
 
 // static
 Clipboard::FormatType Clipboard::GetWebKitSmartPasteFormatType() {
   static const std::string type =
       base::SysNSStringToUTF8(kWebSmartPastePboardType);
   return type;
 }