Make callers of CommandLine use it via the base:: namespace.

tools/gn/command_desc.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 <algorithm>
 #include <set>
 #include <sstream>
 
 #include "base/command_line.h"
 #include "tools/gn/commands.h"
@@ skipping 84 matching lines @@
 
     OutputString("\n");
     if (print_children) {
       RecursivePrintDeps(cur_dep, default_toolchain, seen_targets,
                          indent_level + 1);
     }
   }
 }
 
 void PrintDeps(const Target* target, bool display_header) {
-  const CommandLine* cmdline = CommandLine::ForCurrentProcess();
+  const base::CommandLine* cmdline = base::CommandLine::ForCurrentProcess();
   Label toolchain_label = target->label().GetToolchainLabel();
 
   // Tree mode is separate.
   if (cmdline->HasSwitch("tree")) {
     if (display_header)
       OutputString("\nDependency tree:\n");
 
     if (cmdline->HasSwitch("all")) {
       // Show all tree deps with no eliding.
       RecursivePrintDeps(target, toolchain_label, NULL, 1);
@@ skipping 284 matching lines @@
     out << "    " << FormatSourceDir(dir) << "\n";
   }
 };
 
 // Writes a given config value type to the string, optionally with attribution.
 // This should match RecursiveTargetConfigToStream in the order it traverses.
 template<typename T> void OutputRecursiveTargetConfig(
     const Target* target,
     const char* header_name,
     const std::vector<T>& (ConfigValues::* getter)() const) {
-  bool display_blame = CommandLine::ForCurrentProcess()->HasSwitch("blame");
+  bool display_blame =
+      base::CommandLine::ForCurrentProcess()->HasSwitch("blame");
 
   DescValueWriter<T> writer;
   std::ostringstream out;
 
   for (ConfigValuesIterator iter(target); !iter.done(); iter.Next()) {
     if ((iter.cur().*getter)().empty())
       continue;
 
     // Optional blame sub-head.
     if (display_blame) {
@@ skipping 278 matching lines @@
   // so always display them, even for groups and such.
   PrintLibs(target, true);
   PrintLibDirs(target, true);
 
   PrintDeps(target, true);
 
   return 0;
 }
 
 }  // namespace commands