Image Search: Move thumbnail JPEG encoding to the renderer.

chrome/browser/ui/tab_contents/core_tab_helper.cc

 // Copyright (c) 2012 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/browser/ui/tab_contents/core_tab_helper.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 184 matching lines @@
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_RequestThumbnailForContextNode_ACK,
                         OnRequestThumbnailForContextNodeACK)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 // Handles the image thumbnail for the context node, composes a image search
 // request based on the received thumbnail and opens the request in a new tab.
 void CoreTabHelper::OnRequestThumbnailForContextNodeACK(
-    const SkBitmap& bitmap,
+    const std::string& thumbnail_data,
     const gfx::Size& original_size) {
-  if (bitmap.isNull())
+  if (thumbnail_data.empty())
     return;
+
   Profile* profile =
       Profile::FromBrowserContext(web_contents()->GetBrowserContext());
 
   TemplateURLService* template_url_service =
       TemplateURLServiceFactory::GetForProfile(profile);
   if (!template_url_service)
     return;
   const TemplateURL* const default_provider =
       template_url_service->GetDefaultSearchProvider();
   if (!default_provider)
     return;
 
-  const int kDefaultQualityForImageSearch = 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()), kDefaultQualityForImageSearch,
-      &data))
-    return;
-
   TemplateURLRef::SearchTermsArgs search_args =
       TemplateURLRef::SearchTermsArgs(base::string16());
-  search_args.image_thumbnail_content = std::string(data.begin(), data.end());
+  search_args.image_thumbnail_content = thumbnail_data;
   // TODO(jnd): Add a method in WebContentsViewDelegate to get the image URL
   // from the ContextMenuParams which creates current context menu.
   search_args.image_url = GURL();
   search_args.image_original_size = original_size;
   TemplateURLRef::PostContent post_content;
   GURL result(default_provider->image_url_ref().ReplaceSearchTerms(
       search_args, template_url_service->search_terms_data(), &post_content));
   if (!result.is_valid())
     return;
 
   content::OpenURLParams open_url_params(
       result, content::Referrer(), NEW_FOREGROUND_TAB,
       ui::PAGE_TRANSITION_LINK, false);
   const std::string& content_type = post_content.first;
   std::string* post_data = &post_content.second;
   if (!post_data->empty()) {
     DCHECK(!content_type.empty());
     open_url_params.uses_post = true;
     open_url_params.browser_initiated_post_data =
         base::RefCountedString::TakeString(post_data);
     open_url_params.extra_headers += base::StringPrintf(
         "%s: %s\r\n", net::HttpRequestHeaders::kContentType,
         content_type.c_str());
   }
   web_contents()->OpenURL(open_url_params);
 }