Remove WM_DEADCHAR/WM_SYSDEADCHAR handler

ui/base/ime/input_method_imm32.cc

 // Copyright (c) 2013 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 "ui/base/ime/input_method_imm32.h"
 
 #include "base/basictypes.h"
 #include "ui/base/ime/composition_text.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/base/ime/win/tsf_input_scope.h"
@@ skipping 49 matching lines @@
       break;
     case WM_IME_REQUEST:
       original_result = OnImeRequest(
           event.message, event.wParam, event.lParam, &handled);
       break;
     case WM_CHAR:
     case WM_SYSCHAR:
       original_result = OnChar(
           event.hwnd, event.message, event.wParam, event.lParam, &handled);
       break;
-    case WM_DEADCHAR:
-    case WM_SYSDEADCHAR:
-      original_result = OnDeadChar(
-          event.message, event.wParam, event.lParam, &handled);
-      break;
     case WM_IME_NOTIFY:
       original_result = OnImeNotify(
           event.message, event.wParam, event.lParam, &handled);
       break;
     default:
       NOTREACHED() << "Unknown IME message:" << event.message;
       break;
   }
   if (result)
     *result = original_result;
@@ skipping 205 matching lines @@
       enabled_ = true;
       break;
   }
 
   imm32_manager_.SetTextInputMode(window_handle, text_input_mode);
   tsf_inputscope::SetInputScopeForTsfUnawareWindow(
       window_handle, text_input_type, text_input_mode);
 }
 
 }  // namespace ui