A quick fix for Issue 9596....

chrome/browser/autocomplete/autocomplete_edit_view_win.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/browser/autocomplete/autocomplete_edit_view_win.h"
 
 #include <locale>
 
 #include "base/base_drag_source.h"
 #include "base/base_drop_target.h"
@@ skipping 630 matching lines @@
   SetWindowTextAndCaretPos(display_text, display_text.length());
   if (update_popup)
     UpdatePopup();
   TextChanged();
 }
 
 void AutocompleteEditViewWin::SetWindowTextAndCaretPos(const std::wstring& text,
                                                        size_t caret_pos) {
   HIMC imm_context = ImmGetContext(m_hWnd);
   if (imm_context) {
-    // In Windows Vista, SetWindowText() automatically completes any ongoing
+    // In Windows Vista, SetWindowText() automatically cancels any ongoing
     // IME composition, and updates the text of the underlying edit control.
     // In Windows XP, however, SetWindowText() gets applied to the IME
     // composition string if it exists, and doesn't update the underlying edit
-    // control. To avoid this, we force the IME to complete any outstanding
+    // control. To avoid this, we force the IME to cancel any outstanding
     // compositions here.  This is harmless in Vista and in cases where the IME
     // isn't composing.
-    ImmNotifyIME(imm_context, NI_COMPOSITIONSTR, CPS_COMPLETE, 0);
+    ImmNotifyIME(imm_context, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
     ImmReleaseContext(m_hWnd, imm_context);
   }
 
   SetWindowText(text.c_str());
   PlaceCaretAt(caret_pos);
 }
 
 bool AutocompleteEditViewWin::IsSelectAll() {
   CHARRANGE selection;
   GetSel(selection);
@@ skipping 1535 matching lines @@
 }
 
 void AutocompleteEditViewWin::RepaintDropHighlight(int position) {
   if ((position != -1) && (position <= GetTextLength())) {
     const POINT min_loc(PosFromChar(position));
     const RECT highlight_bounds = {min_loc.x - 1, font_y_adjustment_,
         min_loc.x + 2, font_ascent_ + font_descent_ + font_y_adjustment_};
     InvalidateRect(&highlight_bounds, false);
   }
 }