Rebuild test history databases when starting up performance_ui_tests.

chrome/browser/history/top_sites_impl.h

Index: chrome/browser/history/top_sites_impl.h
diff --git a/chrome/browser/history/top_sites_impl.h b/chrome/browser/history/top_sites_impl.h
index 6292bd362e2807692ed4b5eaf965f0c07f0cfc63..e5abb645589f153bd70d0ae9e019ad48e3a07998 100644
--- a/chrome/browser/history/top_sites_impl.h
+++ b/chrome/browser/history/top_sites_impl.h
@@ -58,6 +58,10 @@ class TopSitesImpl : public TopSites {
   virtual bool SetPageThumbnail(const GURL& url,
                         const gfx::Image& thumbnail,
                         const ThumbnailScore& score) OVERRIDE;
+  virtual bool SetPageThumbnailToJPEGBytes(
+      const GURL& url,
+      const base::RefCountedMemory* memory,
+      const ThumbnailScore& score) OVERRIDE;
   virtual void GetMostVisitedURLs(
       const GetMostVisitedURLsCallback& callback) OVERRIDE;
   virtual bool GetPageThumbnail(
@@ -136,13 +140,13 @@ class TopSitesImpl : public TopSites {
   // reading last known top sites from the DB.
   // Returns true if the thumbnail was set, false if the existing one is better.
   bool SetPageThumbnailNoDB(const GURL& url,
-                            const base::RefCountedBytes* thumbnail_data,
+                            const base::RefCountedMemory* thumbnail_data,
                             const ThumbnailScore& score);
 
   // A version of SetPageThumbnail that takes RefCountedBytes as
   // returned by HistoryService.
   bool SetPageThumbnailEncoded(const GURL& url,
-                               const base::RefCountedBytes* thumbnail,
+                               const base::RefCountedMemory* thumbnail,
                                const ThumbnailScore& score);
 
   // Encodes the bitmap to bytes for storage to the db. Returns true if the
@@ -156,7 +160,7 @@ class TopSitesImpl : public TopSites {
 
   // Add a thumbnail for an unknown url. See temp_thumbnails_map_.
   void AddTemporaryThumbnail(const GURL& url,
-                             const base::RefCountedBytes* thumbnail,
+                             const base::RefCountedMemory* thumbnail,
                              const ThumbnailScore& score);
 
   // Called by our timer. Starts the query for the most visited sites.