Add method for removing bookmark image data.

components/enhanced_bookmarks/enhanced_bookmark_model.cc

 // Copyright 2014 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 "components/enhanced_bookmarks/enhanced_bookmark_model.h"
 
 #include <iomanip>
 #include <sstream>
 
 #include "base/base64.h"
@@ skipping 208 matching lines @@
   bool result = data.SerializePartialToString(&output);
   if (!result)
     return false;
 
   std::string encoded;
   base::Base64Encode(output, &encoded);
   SetMetaInfo(node, kImageDataKey, encoded);
   return true;
 }
 
+void EnhancedBookmarkModel::RemoveImageData(const BookmarkNode* node) {
+  DCHECK(node->is_url());
+  image::collections::ImageData data;
+  data.set_user_removed_image(true);
+
+  std::string encoded_data;
+  base::Base64Encode(data.SerializeAsString(), &encoded_data);
+  SetMetaInfo(node, kImageDataKey, encoded_data);
+}
+
 bool EnhancedBookmarkModel::GetOriginalImage(const BookmarkNode* node,
                                              GURL* url,
                                              int* width,
                                              int* height) {
   std::string decoded(DataForMetaInfoField(node, kImageDataKey));
   if (decoded.empty())
     return false;
 
   image::collections::ImageData data;
   bool result = data.ParseFromString(decoded);
@@ skipping 305 matching lines @@
   if (!result)
     return false;
 
   std::string encoded;
   base::Base64Encode(output, &encoded);
   bookmark_model_->SetNodeMetaInfo(node, kImageDataKey, encoded);
   return true;
 }
 
 }  // namespace enhanced_bookmarks