A tricky fix for Issue 1845 (Take 2)....

chrome/renderer/render_widget.cc

 // Copyright (c) 2006-2008 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.
 
 #include "chrome/renderer/render_widget.h"
 
 #include "base/gfx/point.h"
 #include "base/gfx/size.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/scoped_ptr.h"
 #include "build/build_config.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/transport_dib.h"
 #include "chrome/renderer/render_process.h"
 #include "skia/ext/platform_canvas.h"
 
 #if defined(OS_POSIX)
 #include "skia/include/SkPixelRef.h"
 #include "skia/include/SkMallocPixelRef.h"
 #endif  // defined(OS_POSIX)
 
 #include "webkit/glue/webinputevent.h"
+#include "webkit/glue/webtextdirection.h"
 #include "webkit/glue/webwidget.h"
 
 RenderWidget::RenderWidget(RenderThreadBase* render_thread, bool activatable)
     : routing_id_(MSG_ROUTING_NONE),
       webwidget_(NULL),
       opener_id_(MSG_ROUTING_NONE),
       render_thread_(render_thread),
       host_window_(NULL),
       current_paint_buf_(NULL),
       current_scroll_buf_(NULL),
@@ skipping 78 matching lines @@
   IPC_MESSAGE_HANDLER(ViewMsg_WasHidden, OnWasHidden)
   IPC_MESSAGE_HANDLER(ViewMsg_WasRestored, OnWasRestored)
   IPC_MESSAGE_HANDLER(ViewMsg_PaintRect_ACK, OnPaintRectAck)
   IPC_MESSAGE_HANDLER(ViewMsg_ScrollRect_ACK, OnScrollRectAck)
   IPC_MESSAGE_HANDLER(ViewMsg_HandleInputEvent, OnHandleInputEvent)
   IPC_MESSAGE_HANDLER(ViewMsg_MouseCaptureLost, OnMouseCaptureLost)
   IPC_MESSAGE_HANDLER(ViewMsg_SetFocus, OnSetFocus)
   IPC_MESSAGE_HANDLER(ViewMsg_ImeSetInputMode, OnImeSetInputMode)
   IPC_MESSAGE_HANDLER(ViewMsg_ImeSetComposition, OnImeSetComposition)
   IPC_MESSAGE_HANDLER(ViewMsg_Repaint, OnMsgRepaint)
+  IPC_MESSAGE_HANDLER(ViewMsg_SetTextDirection, OnSetTextDirection)
   IPC_MESSAGE_UNHANDLED_ERROR()
 IPC_END_MESSAGE_MAP()
 
 bool RenderWidget::Send(IPC::Message* message) {
   // Don't send any messages after the browser has told us to close.
   if (closing_) {
     delete message;
     return false;
   }
 
@@ skipping 505 matching lines @@
 void RenderWidget::OnMsgRepaint(const gfx::Size& size_to_paint) {
   // During shutdown we can just ignore this message.
   if (!webwidget_)
     return;
 
   set_next_paint_is_repaint_ack();
   gfx::Rect repaint_rect(size_to_paint.width(), size_to_paint.height());
   DidInvalidateRect(webwidget_, repaint_rect);
 }
 
+void RenderWidget::OnSetTextDirection(int direction) {
+  if (!webwidget_)
+    return;
+
+  WebTextDirection new_direction = static_cast<WebTextDirection>(direction);
+  if (new_direction == WEB_TEXT_DIRECTION_DEFAULT ||
+      new_direction == WEB_TEXT_DIRECTION_LTR ||
+      new_direction == WEB_TEXT_DIRECTION_RTL) {
+    webwidget_->SetTextDirection(new_direction);
+  } else {
+    NOTREACHED();
+  }
+}
+
 bool RenderWidget::next_paint_is_resize_ack() const {
   return ViewHostMsg_PaintRect_Flags::is_resize_ack(next_paint_flags_);
 }
 
 bool RenderWidget::next_paint_is_restore_ack() const {
   return ViewHostMsg_PaintRect_Flags::is_restore_ack(next_paint_flags_);
 }
 
 void RenderWidget::set_next_paint_is_resize_ack() {
   next_paint_flags_ |= ViewHostMsg_PaintRect_Flags::IS_RESIZE_ACK;
@@ skipping 84 matching lines @@
   for (; i < plugin_window_moves_.size(); ++i) {
     if (plugin_window_moves_[i].window == move.window) {
       plugin_window_moves_[i] = move;
       break;
     }
   }
 
   if (i == plugin_window_moves_.size())
     plugin_window_moves_.push_back(move);
 }