Revert of Ensure that the browser’s copy of page id is in sync with the renderer’s.

chrome/common/crash_keys.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 "chrome/common/crash_keys.h"
 
 #include "base/command_line.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/strings/string_split.h"
@@ skipping 148 matching lines @@
     { mac::kLastNSExceptionTrace, kMediumSize },
     { mac::kNSException, kMediumSize },
     { mac::kNSExceptionTrace, kMediumSize },
     { mac::kSendAction, kMediumSize },
     { mac::kZombie, kMediumSize },
     { mac::kZombieTrace, kMediumSize },
     // content/:
     { "channel_error_bt", kMediumSize },
     { "remove_route_bt", kMediumSize },
     { "rwhvm_window", kMediumSize },
-    // The following keys are for diagnosing crashes in http://crbug.com/369661.
-    // They will not be permanent.
-    { "renderer_page_id", kSmallSize },
-    { "browser_page_id", kSmallSize },
-    { "last_committed_page_id", kSmallSize },
-    { "quick_discard", kSmallSize },
-    // End http://crbug.com/369661
     // media/:
     { "VideoCaptureDeviceQTKit", kSmallSize },
 #endif
   };
 
   // This dynamic set of keys is used for sets of key value pairs when gathering
   // a collection of data, like command line switches or extension IDs.
   std::vector<base::debug::CrashKey> keys(
       fixed_keys, fixed_keys + arraysize(fixed_keys));
 
@@ skipping 216 matching lines @@
 }
 
 ScopedPrinterInfo::~ScopedPrinterInfo() {
   for (size_t i = 0; i < kPrinterInfoCount; ++i) {
     std::string key = base::StringPrintf(kPrinterInfo, i + 1);
     base::debug::ClearCrashKey(key);
   }
 }
 
 }  // namespace crash_keys