Plumb direction of document title through IPC layer.

content/common/view_messages.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "content/common/common_param_traits.h"
@@ skipping 148 matching lines @@
 IPC_ENUM_TRAITS(PageZoom::Function)
 IPC_ENUM_TRAITS(RendererPreferencesHintingEnum)
 IPC_ENUM_TRAITS(RendererPreferencesSubpixelRenderingEnum)
 IPC_ENUM_TRAITS(ViewHostMsg_AccessibilityNotification_Type::Value)
 IPC_ENUM_TRAITS(ViewHostMsg_RunFileChooser_Mode::Value)
 IPC_ENUM_TRAITS(ViewMsg_Navigate_Type::Value)
 IPC_ENUM_TRAITS(ViewMsg_StopFinding_Params::Action)
 IPC_ENUM_TRAITS(WebKit::WebContextMenuData::MediaType)
 IPC_ENUM_TRAITS(WebKit::WebMediaPlayerAction::Type)
 IPC_ENUM_TRAITS(WebKit::WebPopupType)
+IPC_ENUM_TRAITS(WebKit::WebTextDirection)
 IPC_ENUM_TRAITS(WebKit::WebTextInputType)
 IPC_ENUM_TRAITS(WebMenuItem::Type)
 IPC_ENUM_TRAITS(WindowContainerType)
 IPC_ENUM_TRAITS(webkit_glue::WebAccessibility::Role)
 IPC_ENUM_TRAITS(webkit_glue::WebAccessibility::State)
 
 IPC_STRUCT_TRAITS_BEGIN(ContextMenuParams)
   IPC_STRUCT_TRAITS_MEMBER(media_type)
   IPC_STRUCT_TRAITS_MEMBER(x)
   IPC_STRUCT_TRAITS_MEMBER(y)
@@ skipping 1142 matching lines @@
 // Notifies the browser that a document has been loaded in a frame.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_DocumentLoadedInFrame,
                     int64 /* frame_id */)
 
 // Notifies the browser that a frame finished loading.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_DidFinishLoad,
                     int64 /* frame_id */)
 
 // Changes the title for the page in the UI when the page is navigated or the
 // title changes.
-// TODO(darin): use a UTF-8 string to reduce data size
-IPC_MESSAGE_ROUTED2(ViewHostMsg_UpdateTitle,
-                    int32,
-                    std::wstring)
+IPC_MESSAGE_ROUTED3(ViewHostMsg_UpdateTitle,
+                    int32 /* page_id */,
+                    string16 /* title */,
+                    WebKit::WebTextDirection /* title direction */)
 
 // Changes the icon url for the page in the UI.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_UpdateIconURL,
                     int32,
                     GURL)
 
 // Change the encoding name of the page in UI when the page has detected
 // proper encoding name.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_UpdateEncoding,
                     std::string /* new encoding name */)
@@ skipping 616 matching lines @@
 // Stores new inspector setting in the profile.
 // TODO(jam): this should be in the chrome module
 IPC_MESSAGE_ROUTED2(ViewHostMsg_UpdateInspectorSetting,
                     std::string,  /* key */
                     std::string /* value */)
 
 // Message sent from the renderer to the browser to notify it of events which
 // may lead to the cancellation of a prerender. The message is sent only when
 // the renderer is in prerender mode.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_MaybeCancelPrerenderForHTML5Media)