Move core url data manager classes to content.

content/browser/resource_context_impl.cc

Index: content/browser/resource_context_impl.cc
===================================================================
--- content/browser/resource_context_impl.cc	(revision 178598)
+++ content/browser/resource_context_impl.cc	(working copy)
@@ -9,19 +9,21 @@
 #include "content/browser/host_zoom_map_impl.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/loader/resource_request_info_impl.h"
+#include "content/browser/webui/url_data_manager_backend.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 
-// Key names on ResourceContext.
-static const char* kBlobStorageContextKeyName = "content_blob_storage_context";
-static const char* kHostZoomMapKeyName = "content_host_zoom_map";
-
 using base::UserDataAdapter;
 
 namespace content {
 
 namespace {
 
+// Key names on ResourceContext.
+const char kBlobStorageContextKeyName[] = "content_blob_storage_context";
+const char kHostZoomMapKeyName[] = "content_host_zoom_map";
+const char kURLDataManagerBackendKeyName[] = "url_data_manager_backend";
+
 class NonOwningZoomData : public base::SupportsUserData::Data {
  public:
   explicit NonOwningZoomData(HostZoomMap* hzm) : host_zoom_map_(hzm) {}
@@ -45,6 +47,9 @@
     rdhi->CancelRequestsForContext(this);
     rdhi->RemoveResourceContext(this);
   }
+
+  // In some tests this object is destructed on UI thread.
+  DetachUserDataThread();
 }
 
 ChromeBlobStorageContext* GetChromeBlobStorageContextForResourceContext(
@@ -60,6 +65,17 @@
       context->GetUserData(kHostZoomMapKeyName))->host_zoom_map();
 }
 
+ChromeURLDataManagerBackend* GetURLDataManagerForResourceContext(
+    ResourceContext* context) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  if (!context->GetUserData(kURLDataManagerBackendKeyName)) {
+    context->SetUserData(kURLDataManagerBackendKeyName,
+                         new ChromeURLDataManagerBackend());
+  }
+  return static_cast<ChromeURLDataManagerBackend*>(
+      context->GetUserData(kURLDataManagerBackendKeyName));
+}
+
 void InitializeResourceContext(BrowserContext* browser_context) {
   ResourceContext* resource_context = browser_context->GetResourceContext();
   DCHECK(!resource_context->GetUserData(kHostZoomMapKeyName));
@@ -75,6 +91,7 @@
       kHostZoomMapKeyName,
       new NonOwningZoomData(
           HostZoomMap::GetForBrowserContext(browser_context)));
+
   resource_context->DetachUserDataThread();
 }