Implementing URL prefix match for history thumbnail cache.

chrome/browser/thumbnails/thumbnail_service_impl.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/thumbnails/thumbnail_service_impl.h"
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted_memory.h"
 #include "chrome/browser/history/history_service.h"
 #include "chrome/browser/search/search.h"
@@ skipping 10 matching lines @@
 
 // True if thumbnail retargeting feature is enabled (Finch/flags).
 bool IsThumbnailRetargetingEnabled() {
   if (!chrome::IsInstantExtendedAPIEnabled())
     return false;
 
   return CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableThumbnailRetargeting);
 }
 
-}
+}  // namespace
 
 namespace thumbnails {
 
 ThumbnailServiceImpl::ThumbnailServiceImpl(Profile* profile)
     : top_sites_(profile->GetTopSites()),
-      use_thumbnail_retargeting_(IsThumbnailRetargetingEnabled()){
+      use_thumbnail_retargeting_(IsThumbnailRetargetingEnabled()) {
 }
 
 ThumbnailServiceImpl::~ThumbnailServiceImpl() {
 }
 
 bool ThumbnailServiceImpl::SetPageThumbnail(const ThumbnailingContext& context,
                                             const gfx::Image& thumbnail) {
   scoped_refptr<history::TopSites> local_ptr(top_sites_);
   if (local_ptr.get() == NULL)
     return false;
 
   return local_ptr->SetPageThumbnail(context.url, thumbnail, context.score);
 }
 
 bool ThumbnailServiceImpl::GetPageThumbnail(
     const GURL& url,
+    bool prefix_match,
     scoped_refptr<base::RefCountedMemory>* bytes) {
   scoped_refptr<history::TopSites> local_ptr(top_sites_);
   if (local_ptr.get() == NULL)
     return false;
 
-  return local_ptr->GetPageThumbnail(url, bytes);
+  return local_ptr->GetPageThumbnail(url, prefix_match, bytes);
 }
 
 ThumbnailingAlgorithm* ThumbnailServiceImpl::GetThumbnailingAlgorithm()
     const {
   const gfx::Size thumbnail_size(kThumbnailWidth, kThumbnailHeight);
   if (use_thumbnail_retargeting_)
     return new ContentBasedThumbnailingAlgorithm(thumbnail_size);
   return new SimpleThumbnailCrop(thumbnail_size);
 }
 
@@ skipping 25 matching lines @@
 }
 
 void ThumbnailServiceImpl::ShutdownOnUIThread() {
   // Since each call uses its own scoped_refptr, we can just clear the reference
   // here by assigning null. If another call is completed, it added its own
   // reference.
   top_sites_ = NULL;
 }
 
 }  // namespace thumbnails