Cleanup SQLite 3.6.18 import.

third_party/sqlite/preload-cache.patch

+Adds a new API function sqlite3_preload().  This fills the page cache
+with the first pages of the database.
+
 Index: src/build.c
 ===================================================================
 --- src/build.c 2009-09-11 07:02:46.000000000 -0700
 +++ src/build.c 2009-09-14 18:16:46.000000000 -0700
 @@ -26,6 +26,9 @@
  */
  #include "sqliteInt.h"
  
 +#include "pager.h"
 +#include "btree.h"
 +
  /*
  ** This routine is called when a new SQL statement is beginning to
  ** be parsed.  Initialize the pParse structure as needed.
 @@ -3659,3 +3662,30 @@
    }
    return pKey;
  }
 +
 +/* Begin preload-cache.patch for Chromium */
 +/* See declaration in sqlite3.h for information */
-+int sqlite3Preload(sqlite3 *db)
++int sqlite3_preload(sqlite3 *db)
 +{
 +  Pager *pPager;
 +  Btree *pBt;
 +  int rc;
 +  int i;
 +  int dbsLoaded = 0;
 +
 +  for(i=0; i<db->nDb; i++) {
 +    pBt = db->aDb[i].pBt;
 +    if( !pBt )
@@ skipping 23 matching lines @@
 +** Preload the databases into the pager cache, up to the maximum size of the
 +** pager cache.
 +**
 +** For a database to be loaded successfully, the pager must be active. That is,
 +** there must be an open statement on that database. See sqlite3pager_loadall
 +**
 +** There might be many databases attached to the given connection. We iterate
 +** them all and try to load them. If none are loadable successfully, we return
 +** an error. Otherwise, we return OK.
 +*/
-+int sqlite3Preload(sqlite3 *db);
++int sqlite3_preload(sqlite3 *db);
 +/* End preload-cache.patch for Chromium */
 +
  /*
  ** CAPI3REF: Virtual File System Objects {H11200} <S20100>
  **
 Index: src/pager.c
 ===================================================================
 --- src/pager.c 2009-09-07 08:58:09.000000000 -0700
 +++ src/pager.c 2009-09-15 16:43:07.000000000 -0700
 @@ -388,6 +388,16 @@
@@ skipping 158 matching lines @@
 +++ src/pager.h 2009-09-15 11:31:55.000000000 -0700
 @@ -143,6 +143,8 @@
  sqlite3_file *sqlite3PagerFile(Pager*);
  const char *sqlite3PagerJournalname(Pager*);
  int sqlite3PagerNosync(Pager*);
 +/* This function is for preload-cache.patch for Chromium: */
 +int sqlite3PagerLoadall(Pager*);
  void *sqlite3PagerTempSpace(Pager*);
  int sqlite3PagerIsMemdb(Pager*);
  
+Index: src/pcache.c
+===================================================================
+--- src/pcache.c        2009-09-04 13:37:42.000000000 -0700
++++ src/pcache.c        2009-09-15 16:41:55.000000000 -0700
+@@ -542,14 +542,12 @@
+   return nPage;
+ }
+ 
+-#ifdef SQLITE_TEST
+ /*
+ ** Get the suggested cache-size value.
+ */
+ int sqlite3PcacheGetCachesize(PCache *pCache){
+   return pCache->nMax;
+ }
+-#endif
+ 
+ /*
+ ** Set the suggested cache-size value.
+Index: src/pcache.h
+===================================================================
+--- src/pcache.h        2009-09-04 13:37:42.000000000 -0700
++++ src/pcache.h        2009-09-15 16:41:52.000000000 -0700
+@@ -139,9 +139,7 @@
+ ** of the suggested cache-sizes.
+ */
+ void sqlite3PcacheSetCachesize(PCache *, int);
+-#ifdef SQLITE_TEST
+ int sqlite3PcacheGetCachesize(PCache *);
+-#endif
+ 
+ #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
+ /* Try to return memory used by the pcache module to the main memory heap */