Enabled the "search web for image" context menu item when "Yandex"

chrome/renderer/chrome_render_frame_observer.cc

 // Copyright 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 "chrome/renderer/chrome_render_frame_observer.h"
 
 #include <limits>
 #include <string>
 #include <vector>
 
@@ skipping 133 matching lines @@
     const int kDefaultQuality = 90;
     std::vector<unsigned char> data;
     if (gfx::JPEGCodec::Encode(
             reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)),
             gfx::JPEGCodec::FORMAT_SkBitmap, bitmap.width(), bitmap.height(),
             static_cast<int>(bitmap.rowBytes()), kDefaultQuality, &data))
       thumbnail_data = std::string(data.begin(), data.end());
   }
 
   Send(new ChromeViewHostMsg_RequestThumbnailForContextNode_ACK(
-      routing_id(), thumbnail_data, original_size));
+      routing_id(), thumbnail_data, "jpeg", original_size));
 }
 
 void ChromeRenderFrameObserver::OnPrintNodeUnderContextMenu() {
   printing::PrintWebViewHelper* helper =
       printing::PrintWebViewHelper::Get(render_frame()->GetRenderView());
   if (helper)
     helper->PrintNode(render_frame()->GetContextMenuNode());
 }
 
 void ChromeRenderFrameObserver::DidFinishDocumentLoad() {
@@ skipping 18 matching lines @@
               blink::WebConsoleMessage::LevelWarning,
               base::ASCIIToUTF16(
                   "This site does not have a valid SSL "
                   "certificate! Without SSL, your site's and "
                   "visitors' data is vulnerable to theft and "
                   "tampering. Get a valid SSL certificate before"
                   " releasing your website to the public.")));
     }
   }
 }