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

content/shell/app/shell_crash_reporter_client.cc

Index: content/shell/app/shell_crash_reporter_client.cc
diff --git a/content/shell/app/shell_crash_reporter_client.cc b/content/shell/app/shell_crash_reporter_client.cc
index 0ab490c3b793799814410150c5088892bb746334..fab0e9031b55680471e417e45d82bca698ee8959 100644
--- a/content/shell/app/shell_crash_reporter_client.cc
+++ b/content/shell/app/shell_crash_reporter_client.cc
@@ -48,9 +48,10 @@ base::FilePath ShellCrashReporterClient::GetReporterLogFilename() {
 #endif
 
 bool ShellCrashReporterClient::GetCrashDumpLocation(base::FilePath* crash_dir) {
-  if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kCrashDumpsDir))
+  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kCrashDumpsDir))
     return false;
-  *crash_dir = CommandLine::ForCurrentProcess()->GetSwitchValuePath(
+  *crash_dir = base::CommandLine::ForCurrentProcess()->GetSwitchValuePath(
       switches::kCrashDumpsDir);
   return true;
 }