Cleanup: Remove a couple unused frame loading IPC messages.

chrome/common/render_messages.h

 // Copyright (c) 2012 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.
 
 // Multiply-included file, no traditional include guard.
 #include <stdint.h>
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 554 matching lines @@
                     bool /* is_apple_mobile_webapp_capable */,
                     GURL /* expected_url */)
 
 IPC_MESSAGE_ROUTED4(ChromeViewHostMsg_DidRetrieveMetaTagContent,
                     bool /* success */,
                     std::string /* tag_name */,
                     std::string /* tag_content */,
                     GURL /* expected_url */)
 #endif  // defined(OS_ANDROID)
 
-// This message indicates the error appeared in the frame.
-IPC_MESSAGE_ROUTED1(ChromeViewHostMsg_FrameLoadingError,
-                    int /* error */)
-
-// This message indicates the monitored frame loading had completed.
-IPC_MESSAGE_ROUTED0(ChromeViewHostMsg_FrameLoadingCompleted)
-
 // Logs events from InstantExtended New Tab Pages.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_LogEvent,
                     int /* page_seq_no */,
                     NTPLoggingEventType /* event */)
 
 // Logs an impression on one of the Most Visited tile on the InstantExtended
 // New Tab Page.
 IPC_MESSAGE_ROUTED3(ChromeViewHostMsg_LogMostVisitedImpression,
                     int /* page_seq_no */,
                     int /* position */,
@@ skipping 60 matching lines @@
 // process so that they can be assigned to an Instant renderer.
 IPC_MESSAGE_CONTROL2(ChromeViewMsg_SetSearchURLs,
                      std::vector<GURL> /* search_urls */,
                      GURL /* new_tab_page_url */)
 
 #if defined(ENABLE_PLUGINS)
 // Sent by the renderer to check if crash reporting is enabled.
 IPC_SYNC_MESSAGE_CONTROL0_1(ChromeViewHostMsg_IsCrashReportingEnabled,
                             bool /* enabled */)
 #endif