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

chrome/browser/bookmarks/enhanced_bookmarks_features.cc

Index: chrome/browser/bookmarks/enhanced_bookmarks_features.cc
diff --git a/chrome/browser/bookmarks/enhanced_bookmarks_features.cc b/chrome/browser/bookmarks/enhanced_bookmarks_features.cc
index f441a62a398af2461bc8583c0ab1216c6f6f5ffb..1992640e967b934469bd68af88ca166631565d03 100644
--- a/chrome/browser/bookmarks/enhanced_bookmarks_features.cc
+++ b/chrome/browser/bookmarks/enhanced_bookmarks_features.cc
@@ -87,7 +87,7 @@ void UpdateBookmarksExperimentState(
 
   // kEnhancedBookmarksExperiment flag could have values "", "1" and "0".
   // "0" - user opted out.
-  bool opt_out = CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+  bool opt_out = base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
                      switches::kEnhancedBookmarksExperiment) == "0";
 
   BookmarksExperimentState bookmarks_experiment_new_state =
@@ -135,9 +135,9 @@ void UpdateBookmarksExperimentState(
   }
 
 #if defined(OS_ANDROID)
-  bool opt_in = !opt_out
-      && CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
-          switches::kEnhancedBookmarksExperiment) == "1";
+  bool opt_in = !opt_out &&
+                base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+                    switches::kEnhancedBookmarksExperiment) == "1";
   if (opt_in && bookmarks_experiment_new_state == BOOKMARKS_EXPERIMENT_NONE)
     bookmarks_experiment_new_state = BOOKMARKS_EXPERIMENT_ENABLED;
 #endif
@@ -202,7 +202,7 @@ bool IsEnhancedBookmarksExperimentEnabled(
   if (flags.find(switches::kManualEnhancedBookmarksOptout) != flags.end())
     return true;
 #else
-  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(switches::kManualEnhancedBookmarks) ||
       command_line->HasSwitch(switches::kManualEnhancedBookmarksOptout)) {
     return true;
@@ -237,8 +237,8 @@ bool IsEnhancedBookmarksEnabled(const PrefService* user_prefs) {
 #endif
 
 bool IsEnableDomDistillerSet() {
-  if (CommandLine::ForCurrentProcess()->
-      HasSwitch(switches::kEnableDomDistiller)) {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableDomDistiller)) {
     return true;
   }
   if (variations::GetVariationParamValue(
@@ -249,8 +249,8 @@ bool IsEnableDomDistillerSet() {
 }
 
 bool IsEnableSyncArticlesSet() {
-  if (CommandLine::ForCurrentProcess()->
-      HasSwitch(switches::kEnableSyncArticles)) {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableSyncArticles)) {
     return true;
   }
   if (variations::GetVariationParamValue(