Fix Valgrind errors that occurred during testing.

chrome/browser/safe_browsing/client_side_detection_service.cc

 // Copyright (c) 2010 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/safe_browsing/client_side_detection_service.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util_proxy.h"
 #include "base/logging.h"
@@ skipping 20 matching lines @@
     "https://sb-ssl.google.com/safebrowsing/clientreport/phishing";
 const char ClientSideDetectionService::kClientModelUrl[] =
     "https://ssl.gstatic.com/safebrowsing/csd/client_model_v0.pb";
 
 ClientSideDetectionService::ClientSideDetectionService(
     const FilePath& model_path,
     URLRequestContextGetter* request_context_getter)
     : model_path_(model_path),
       model_status_(UNKNOWN_STATUS),
       model_file_(base::kInvalidPlatformFileValue),
+      model_fetcher_(NULL),
       ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)),
       request_context_getter_(request_context_getter) {
 }
 
 ClientSideDetectionService::~ClientSideDetectionService() {
   method_factory_.RevokeAll();
   STLDeleteContainerPairPointers(client_phishing_reports_.begin(),
                                  client_phishing_reports_.end());
   client_phishing_reports_.clear();
-  model_fetcher_.reset();
   STLDeleteElements(&open_callbacks_);
   CloseModelFile();
 }
 
 /* static */
 ClientSideDetectionService* ClientSideDetectionService::Create(
     const FilePath& model_path,
     URLRequestContextGetter* request_context_getter) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   scoped_ptr<ClientSideDetectionService> service(
@@ skipping 34 matching lines @@
           phishing_url, score, thumbnail, callback));
 }
 
 void ClientSideDetectionService::OnURLFetchComplete(
     const URLFetcher* source,
     const GURL& url,
     const URLRequestStatus& status,
     int response_code,
     const ResponseCookies& cookies,
     const std::string& data) {
-  if (source == model_fetcher_.get()) {
+  if (source == model_fetcher_) {
     HandleModelResponse(source, url, status, response_code, cookies, data);
+    // The fetcher object will be invalid after this method returns.
+    model_fetcher_ = NULL;
   } else if (client_phishing_reports_.find(source) !=
              client_phishing_reports_.end()) {
     HandlePhishingVerdict(source, url, status, response_code, cookies, data);
   } else {
     NOTREACHED();
   }
+  delete source;
 }
 
 void ClientSideDetectionService::SetModelStatus(ModelStatus status) {
   DCHECK_NE(READY_STATUS, model_status_);
   model_status_ = status;
   if (READY_STATUS == status || ERROR_STATUS == status) {
     for (size_t i = 0; i < open_callbacks_.size(); ++i) {
       open_callbacks_[i]->Run(model_file_);
     }
     STLDeleteElements(&open_callbacks_);
   } else {
     NOTREACHED();
   }
 }
 
 void ClientSideDetectionService::OpenModelFileDone(
     base::PlatformFileError error_code,
     base::PassPlatformFile file,
     bool created) {
   DCHECK(!created);
   if (base::PLATFORM_FILE_OK == error_code) {
     // The model file already exists.  There is no need to fetch the model.
     model_file_ = file.ReleaseValue();
     SetModelStatus(READY_STATUS);
   } else if (base::PLATFORM_FILE_ERROR_NOT_FOUND == error_code) {
     // We need to fetch the model since it does not exist yet.
-    model_fetcher_.reset(URLFetcher::Create(0 /* ID is not used */,
-                                            GURL(kClientModelUrl),
-                                            URLFetcher::GET,
-                                            this));
+    model_fetcher_ = URLFetcher::Create(0 /* ID is not used */,
+                                        GURL(kClientModelUrl),
+                                        URLFetcher::GET,
+                                        this);
     model_fetcher_->set_request_context(request_context_getter_.get());
     model_fetcher_->Start();
   } else {
     // It is not clear what we should do in this case.  For now we simply fail.
     // Hopefully, we'll be able to read the model during the next browser
     // restart.
     SetModelStatus(ERROR_STATUS);
   }
 }
 
@@ skipping 153 matching lines @@
     info->callback->Run(info->phishing_url, response.phishy());
   } else {
     DLOG(ERROR) << "Unable to get the server verdict for URL: "
                 << info->phishing_url;
     info->callback->Run(info->phishing_url, false);
   }
   client_phishing_reports_.erase(source);
 }
 
 }  // namespace safe_browsing