Cleanup: Remove unneeded forward declarations from various chrome subdirectories.

chrome/common/logging_chrome.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_COMMON_LOGGING_CHROME_H__
 #define CHROME_COMMON_LOGGING_CHROME_H__
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
 
 class CommandLine;
 class FilePath;
 
-namespace base {
-class Time;
-}
-
 namespace logging {
 
 // Call to initialize logging for Chrome. This sets up the chrome-specific
 // logfile naming scheme and might do other things like log modules and
 // setting levels in the future.
 //
 // The main process might want to delete any old log files on startup by
 // setting delete_old_log_file, but the renderer processes should not, or
 // they will delete each others' logs.
 //
@@ skipping 31 matching lines @@
 // NOTE: Since this reads the log file to determine the assertions,
 // this operation is O(n) over the length of the log.
 // NOTE: This can fail if the file is locked for writing.  However,
 // this is unlikely as this function is most useful after
 // the program writing the log has terminated.
 size_t GetFatalAssertions(AssertionList* assertions);
 
 // Handler to silently dump the current process without crashing.
 void DumpWithoutCrashing();
 
-} // namespace logging
+}  // namespace logging
 
 #endif  // CHROME_COMMON_LOGGING_CHROME_H_