Fix history importing by delaying DownloadManager creation.

content/shell/shell_browser_context.cc

Index: content/shell/shell_browser_context.cc
diff --git a/content/shell/shell_browser_context.cc b/content/shell/shell_browser_context.cc
index 561382e539bbe70b325a715a0bd63b771007ad83..ad19726d2e1449f21f3f4824983239f908e6dceb 100644
--- a/content/shell/shell_browser_context.cc
+++ b/content/shell/shell_browser_context.cc
@@ -11,6 +11,7 @@
 #include "content/browser/browser_thread.h"
 #include "content/browser/chrome_blob_storage_context.h"
 #include "content/browser/download/download_manager.h"
+#include "content/browser/download/download_id_factory.h"
 #include "content/browser/download/download_status_updater.h"
 #include "content/browser/file_system/browser_file_system_helper.h"
 #include "content/browser/geolocation/geolocation_permission_context.h"
@@ -80,7 +81,8 @@ namespace content {
 
 ShellBrowserContext::ShellBrowserContext(
     ShellBrowserMainParts* shell_main_parts)
-    : shell_main_parts_(shell_main_parts) {
+    : download_id_factory_(new DownloadIdFactory(this)),
+      shell_main_parts_(shell_main_parts) {
 }
 
 ShellBrowserContext::~ShellBrowserContext() {
@@ -123,6 +125,7 @@ DownloadManager* ShellBrowserContext::GetDownloadManager()  {
 
     download_manager_delegate_ = new ShellDownloadManagerDelegate();
     download_manager_ = new DownloadManager(download_manager_delegate_,
+                                            download_id_factory_,
                                             download_status_updater_.get());
     download_manager_delegate_->SetDownloadManager(download_manager_.get());
     download_manager_->Init(this);
@@ -156,7 +159,7 @@ const ResourceContext& ShellBrowserContext::GetResourceContext()  {
     resource_context_.reset(new ShellResourceContext(
         static_cast<ShellURLRequestContextGetter*>(GetRequestContext()),
         GetBlobStorageContext(),
-        GetDownloadManager()->GetNextIdThunk()));
+        download_id_factory_));
   }
   return *resource_context_.get();
 }