Move CommandLine to base namespace.

chrome/browser/chrome_browser_main.h

Index: chrome/browser/chrome_browser_main.h
diff --git a/chrome/browser/chrome_browser_main.h b/chrome/browser/chrome_browser_main.h
index 8ea91ed2fd2bd9ce9aec804e25f84e6ff794e928..be706ab70ead3690c3367b6be61028779c9f311a 100644
--- a/chrome/browser/chrome_browser_main.h
+++ b/chrome/browser/chrome_browser_main.h
@@ -87,7 +87,7 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
   const content::MainFunctionParams& parameters() const {
     return parameters_;
   }
-  const CommandLine& parsed_command_line() const {
+  const base::CommandLine& parsed_command_line() const {
     return parsed_command_line_;
   }
 
@@ -126,7 +126,7 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
   // Members initialized on construction ---------------------------------------
 
   const content::MainFunctionParams parameters_;
-  const CommandLine& parsed_command_line_;
+  const base::CommandLine& parsed_command_line_;
   int result_code_;
 
   // Create StartupTimeBomb object for watching jank during startup.