Register clipboard image blob in the browser process to copy data less.

content/renderer/webclipboard_impl.cc

 // Copyright (c) 2013 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 "content/renderer/webclipboard_impl.h"
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "content/common/clipboard_format.h"
 #include "content/public/common/drop_data.h"
 #include "content/renderer/clipboard_utils.h"
 #include "content/renderer/drop_data_builder.h"
 #include "content/renderer/renderer_clipboard_delegate.h"
-#include "third_party/WebKit/public/platform/WebData.h"
 #include "third_party/WebKit/public/platform/WebDragData.h"
 #include "third_party/WebKit/public/platform/WebImage.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "url/gurl.h"
 
+using blink::WebBlobInfo;
 using blink::WebClipboard;
-using blink::WebData;
 using blink::WebDragData;
 using blink::WebImage;
 using blink::WebString;
 using blink::WebURL;
 using blink::WebVector;
 
 namespace content {
 
 WebClipboardImpl::WebClipboardImpl(RendererClipboardDelegate* delegate)
     : delegate_(delegate) {
@@ skipping 66 matching lines @@
 
   base::string16 html_stdstr;
   GURL gurl;
   delegate_->ReadHTML(clipboard_type, &html_stdstr, &gurl,
                       static_cast<uint32_t*>(fragment_start),
                       static_cast<uint32_t*>(fragment_end));
   *source_url = gurl;
   return html_stdstr;
 }
 
-WebData WebClipboardImpl::readImage(Buffer buffer) {
+WebBlobInfo WebClipboardImpl::readImage(Buffer buffer) {
   ui::ClipboardType clipboard_type;
   if (!ConvertBufferType(buffer, &clipboard_type))
-    return WebData();
+    return WebBlobInfo();
 
-  std::string png_data;
-  delegate_->ReadImage(clipboard_type, &png_data);
-  return WebData(png_data);
+  std::string blob_uuid;
+  std::string type;
+  int64_t size;
+  delegate_->ReadImage(clipboard_type, &blob_uuid, &type, &size);
+  if (size < 0)
+    return WebBlobInfo();
+  return WebBlobInfo(base::ASCIIToUTF16(blob_uuid), base::UTF8ToUTF16(type),
+                     size);
 }
 
 WebString WebClipboardImpl::readCustomData(Buffer buffer,
                                            const WebString& type) {
   ui::ClipboardType clipboard_type;
   if (!ConvertBufferType(buffer, &clipboard_type))
     return WebString();
 
   base::string16 data;
   delegate_->ReadCustomData(clipboard_type, type, &data);
@@ skipping 77 matching lines @@
       return false;
 #endif
     default:
       NOTREACHED();
       return false;
   }
   return true;
 }
 
 }  // namespace content