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

chrome/browser/sync/profile_sync_components_factory_impl_unittest.cc

Index: chrome/browser/sync/profile_sync_components_factory_impl_unittest.cc
diff --git a/chrome/browser/sync/profile_sync_components_factory_impl_unittest.cc b/chrome/browser/sync/profile_sync_components_factory_impl_unittest.cc
index a0337f2c8a3f79642956e25aa81c9cefa1b518d4..2ee465a37779c039ea15db9404401e4a859c73d2 100644
--- a/chrome/browser/sync/profile_sync_components_factory_impl_unittest.cc
+++ b/chrome/browser/sync/profile_sync_components_factory_impl_unittest.cc
@@ -34,7 +34,7 @@ class ProfileSyncComponentsFactoryImplTest : public testing::Test {
   void SetUp() override {
     profile_.reset(new TestingProfile());
     base::FilePath program_path(FILE_PATH_LITERAL("chrome.exe"));
-    command_line_.reset(new CommandLine(program_path));
+    command_line_.reset(new base::CommandLine(program_path));
     scope_set_.insert(GaiaConstants::kChromeSyncOAuth2Scope);
   }
 
@@ -127,7 +127,7 @@ class ProfileSyncComponentsFactoryImplTest : public testing::Test {
 
   content::TestBrowserThreadBundle thread_bundle_;
   scoped_ptr<Profile> profile_;
-  scoped_ptr<CommandLine> command_line_;
+  scoped_ptr<base::CommandLine> command_line_;
   OAuth2TokenService::ScopeSet scope_set_;
 };