Adds speculative prefetching of resources.

chrome/browser/predictors/predictor_database.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/predictors/predictor_database.h"
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/stringprintf.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/predictors/autocomplete_action_predictor_table.h"
 #include "chrome/browser/predictors/resource_prefetch_predictor.h"
 #include "chrome/browser/predictors/resource_prefetch_predictor_tables.h"
+#include "chrome/browser/prerender/prerender_field_trial.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "sql/connection.h"
 #include "sql/statement.h"
 
 namespace {
 
 // TODO(shishir): This should move to a more generic name.
 const FilePath::CharType kPredictorDatabaseName[] =
     FILE_PATH_LITERAL("Network Action Predictor");
@@ skipping 33 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(PredictorDatabaseInternal);
 };
 
 
 PredictorDatabaseInternal::PredictorDatabaseInternal(Profile* profile)
     : db_path_(profile->GetPath().Append(kPredictorDatabaseName)),
       autocomplete_table_(new AutocompleteActionPredictorTable()),
       resource_prefetch_tables_(new ResourcePrefetchPredictorTables()) {
   is_resource_prefetch_predictor_enabled_ =
-      ResourcePrefetchPredictor::IsEnabled(profile);
+      prerender::IsSpeculativeResourcePrefetchingLearningEnabled(profile) ||
+      prerender::IsSpeculativeResourcePrefetchingEnabled(profile);
 }
 
 PredictorDatabaseInternal::~PredictorDatabaseInternal() {
 }
 
 void PredictorDatabaseInternal::Initialize() {
   CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB));
   db_.set_exclusive_locking();
   bool success = db_.Open(db_path_);
 
@@ skipping 48 matching lines @@
 scoped_refptr<ResourcePrefetchPredictorTables>
     PredictorDatabase::resource_prefetch_tables() {
   return db_->resource_prefetch_tables_;
 }
 
 sql::Connection* PredictorDatabase::GetDatabase() {
   return &db_->db_;
 }
 
 }  // namespace predictors