[content shell] implement additional URL handling methods of the WebTestDelegate

content/shell/webkit_test_controller.cc

Index: content/shell/webkit_test_controller.cc
diff --git a/content/shell/webkit_test_controller.cc b/content/shell/webkit_test_controller.cc
index 858e0d968c3d33c2608ad9d89b29f43504145e79..3f6fa90af44dd9ff66196942fea30061ffca02f3 100644
--- a/content/shell/webkit_test_controller.cc
+++ b/content/shell/webkit_test_controller.cc
@@ -219,6 +219,7 @@ bool WebKitTestController::OnMessageReceived(const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)
     IPC_MESSAGE_HANDLER(ShellViewHostMsg_DidFinishLoad, OnDidFinishLoad)
     IPC_MESSAGE_HANDLER(ShellViewHostMsg_PrintMessage, OnPrintMessage)
+    IPC_MESSAGE_HANDLER(ShellViewHostMsg_ReadFileToString, OnReadFileToString)
     IPC_MESSAGE_HANDLER(ShellViewHostMsg_RegisterIsolatedFileSystem,
                         OnRegisterIsolatedFileSystem)
     IPC_MESSAGE_HANDLER(ShellViewHostMsg_TextDump, OnTextDump)
@@ -360,6 +361,11 @@ void WebKitTestController::OnPrintMessage(const std::string& message) {
   printer_->AddMessageRaw(message);
 }
 
+void WebKitTestController::OnReadFileToString(const FilePath& local_file,
+                                              std::string* contents) {
+  file_util::ReadFileToString(local_file, contents);
+}
+
 void WebKitTestController::OnOverridePreferences(
     const ShellWebPreferences& prefs) {
   *prefs_.get() = prefs;