Replace most LOG statements with DLOG statements in base.

base/command_line.cc

 // 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.
 
 #include "base/command_line.h"
 
 #include <algorithm>
 #include <ostream>
 
 #include "base/basictypes.h"
@@ skipping 250 matching lines @@
 }
 
 bool CommandLine::HasSwitch(const std::string& switch_string) const {
   return switches_.find(LowerASCIIOnWindows(switch_string)) != switches_.end();
 }
 
 std::string CommandLine::GetSwitchValueASCII(
     const std::string& switch_string) const {
   StringType value = GetSwitchValueNative(switch_string);
   if (!IsStringASCII(value)) {
-    LOG(WARNING) << "Value of switch (" << switch_string << ") must be ASCII.";
-    return "";
+    DLOG(WARNING) << "Value of switch (" << switch_string << ") must be ASCII.";
+    return std::string();
   }
 #if defined(OS_WIN)
   return WideToASCII(value);
 #else
   return value;
 #endif
 }
 
 FilePath CommandLine::GetSwitchValuePath(
     const std::string& switch_string) const {
@@ skipping 104 matching lines @@
 void CommandLine::ParseFromString(const std::wstring& command_line) {
   std::wstring command_line_string;
   TrimWhitespace(command_line, TRIM_ALL, &command_line_string);
   if (command_line_string.empty())
     return;
 
   int num_args = 0;
   wchar_t** args = NULL;
   args = ::CommandLineToArgvW(command_line_string.c_str(), &num_args);
 
-  PLOG_IF(FATAL, !args) << "CommandLineToArgvW failed on command line: " <<
-                           command_line;
+  DPLOG_IF(FATAL, !args) << "CommandLineToArgvW failed on command line: "
+                         << command_line;
   InitFromArgv(num_args, args);
   LocalFree(args);
 }
 #endif