Implementing URL prefix match for history thumbnail cache.

chrome/browser/thumbnails/thumbnail_service_impl.cc

Index: chrome/browser/thumbnails/thumbnail_service_impl.cc
diff --git a/chrome/browser/thumbnails/thumbnail_service_impl.cc b/chrome/browser/thumbnails/thumbnail_service_impl.cc
index ab3ef6273a8a2de41c9f51b5f33e55d473cb4cb3..f4ae3f5517385be916e99a288b11f5183ff674a2 100644
--- a/chrome/browser/thumbnails/thumbnail_service_impl.cc
+++ b/chrome/browser/thumbnails/thumbnail_service_impl.cc
@@ -28,13 +28,13 @@ bool IsThumbnailRetargetingEnabled() {
       switches::kEnableThumbnailRetargeting);
 }
 
-}
+}  // namespace
 
 namespace thumbnails {
 
 ThumbnailServiceImpl::ThumbnailServiceImpl(Profile* profile)
     : top_sites_(profile->GetTopSites()),
-      use_thumbnail_retargeting_(IsThumbnailRetargetingEnabled()){
+      use_thumbnail_retargeting_(IsThumbnailRetargetingEnabled()) {
 }
 
 ThumbnailServiceImpl::~ThumbnailServiceImpl() {
@@ -51,12 +51,13 @@ bool ThumbnailServiceImpl::SetPageThumbnail(const ThumbnailingContext& context,
 
 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()