Support file utilities and mime-related methods on workers.

chrome/browser/worker_host/worker_process_host.h

Index: chrome/browser/worker_host/worker_process_host.h
diff --git a/chrome/browser/worker_host/worker_process_host.h b/chrome/browser/worker_host/worker_process_host.h
index 0bdc4efa15ac4e0220d8bb15169f802558c69083..3331586e2d2daa8c2eb080bdc9f22708d84c8b4d 100644
--- a/chrome/browser/worker_host/worker_process_host.h
+++ b/chrome/browser/worker_host/worker_process_host.h
@@ -10,6 +10,7 @@
 
 #include "base/basictypes.h"
 #include "base/callback.h"
+#include "base/file_path.h"
 #include "base/ref_counted.h"
 #include "chrome/browser/browser_child_process_host.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
@@ -23,6 +24,7 @@ class ChromeURLRequestContext;
 class ChromeURLRequestContextGetter;
 class DatabaseDispatcherHost;
 class FileSystemDispatcherHost;
+class FileUtilitiesDispatcherHost;
 namespace webkit_database {
 class DatabaseTracker;
 }  // namespace webkit_database
@@ -192,6 +194,13 @@ class WorkerProcessHost : public BrowserChildProcessHost {
   void OnCancelCreateDedicatedWorker(int route_id);
   void OnForwardToWorker(const IPC::Message& message);
 
+  void OnGetMimeTypeFromExtension(
+      const FilePath::StringType& ext, std::string* mime_type);
+  void OnGetMimeTypeFromFile(
+      const FilePath& file_path, std::string* mime_type);
+  void OnGetPreferredExtensionForMimeType(
+      const std::string& mime_type, FilePath::StringType* ext);
+
   Instances instances_;
 
   scoped_refptr<ChromeURLRequestContext> request_context_;
@@ -199,6 +208,7 @@ class WorkerProcessHost : public BrowserChildProcessHost {
   scoped_refptr<DatabaseDispatcherHost> db_dispatcher_host_;
   scoped_ptr<BlobDispatcherHost> blob_dispatcher_host_;
   scoped_refptr<FileSystemDispatcherHost> file_system_dispatcher_host_;
+  scoped_refptr<FileUtilitiesDispatcherHost> file_utilities_dispatcher_host_;
 
   // A callback to create a routing id for the associated worker process.
   scoped_ptr<CallbackWithReturnValue<int>::Type> next_route_id_callback_;