Add support for time based deletion of browsing data on iOS

ios/net/http_cache_helper.cc

Index: ios/net/http_cache_helper.cc
diff --git a/ios/net/http_cache_helper.cc b/ios/net/http_cache_helper.cc
index 5aa57a1db7238f290980668f42797984370df0ec..12b91aa1bc50501295fdc7cac3cb7514de21e949 100644
--- a/ios/net/http_cache_helper.cc
+++ b/ios/net/http_cache_helper.cc
@@ -33,11 +33,14 @@ void PostCallback(const scoped_refptr<base::TaskRunner>& task_runner,
 // Clears the disk_cache::Backend on the IO thread and deletes |backend|.
 void DoomHttpCache(std::unique_ptr<disk_cache::Backend*> backend,
                    const scoped_refptr<base::TaskRunner>& client_task_runner,
+                   const base::Time& delete_begin,
+                   const base::Time& delete_end,
                    const net::CompletionCallback& callback,
                    int error) {
   // |*backend| may be null in case of error.
   if (*backend) {
-    (*backend)->DoomAllEntries(
+    (*backend)->DoomEntriesBetween(
+        delete_begin, delete_end,
         base::Bind(&PostCallback, client_task_runner, callback));
   } else {
     client_task_runner->PostTask(FROM_HERE, base::Bind(callback, error));
@@ -49,6 +52,8 @@ void DoomHttpCache(std::unique_ptr<disk_cache::Backend*> backend,
 void ClearHttpCacheOnIOThread(
     const scoped_refptr<net::URLRequestContextGetter>& getter,
     const scoped_refptr<base::TaskRunner>& client_task_runner,
+    const base::Time& delete_begin,
+    const base::Time& delete_end,
     const net::CompletionCallback& callback) {
   net::HttpCache* http_cache =
       getter->GetURLRequestContext()->http_transaction_factory()->GetCache();
@@ -72,7 +77,7 @@ void ClearHttpCacheOnIOThread(
   disk_cache::Backend** backend_ptr = backend.get();
   net::CompletionCallback doom_callback =
       base::Bind(&DoomHttpCache, base::Passed(std::move(backend)),
-                 client_task_runner, callback);
+                 client_task_runner, delete_begin, delete_end, callback);
 
   int rv = http_cache->GetBackend(backend_ptr, doom_callback);
 
@@ -89,10 +94,14 @@ namespace net {
 
 void ClearHttpCache(const scoped_refptr<net::URLRequestContextGetter>& getter,
                     const scoped_refptr<base::TaskRunner>& network_task_runner,
+                    const base::Time& delete_begin,
+                    const base::Time& delete_end,
                     const net::CompletionCallback& callback) {
+  DCHECK(delete_end != base::Time());
   network_task_runner->PostTask(
       FROM_HERE, base::Bind(&ClearHttpCacheOnIOThread, getter,
-                            base::ThreadTaskRunnerHandle::Get(), callback));
+                            base::ThreadTaskRunnerHandle::Get(), delete_begin,
+                            delete_end, callback));
 }
 
 }  // namespace net