Cleanup: Better constify some strings in chrome/browser/{chromeos,extensions}.

chrome/browser/extensions/api/sessions/sessions_apitest.cc

Index: chrome/browser/extensions/api/sessions/sessions_apitest.cc
diff --git a/chrome/browser/extensions/api/sessions/sessions_apitest.cc b/chrome/browser/extensions/api/sessions/sessions_apitest.cc
index b505229443cda21d9f08e862d5920baca01a19e5..9a672595a287d9da6fe183524b9c95b67e07fdf6 100644
--- a/chrome/browser/extensions/api/sessions/sessions_apitest.cc
+++ b/chrome/browser/extensions/api/sessions/sessions_apitest.cc
@@ -38,7 +38,7 @@ namespace extensions {
 namespace {
 
 // If more sessions are added to session tags, num sessions should be updated.
-const char* kSessionTags[] = {"tag0", "tag1", "tag2", "tag3", "tag4"};
+const char* const kSessionTags[] = {"tag0", "tag1", "tag2", "tag3", "tag4"};
 const size_t kNumSessions = 5;
 
 void BuildSessionSpecifics(const std::string& tag,
@@ -80,7 +80,7 @@ void BuildTabSpecifics(const std::string& tag, int window_id, int tab_id,
   navigation->set_page_transition(sync_pb::SyncEnums_PageTransition_TYPED);
 }
 
-} // namespace
+}  // namespace
 
 class ExtensionSessionsTest : public InProcessBrowserTest {
  public:
@@ -101,7 +101,7 @@ class ExtensionSessionsTest : public InProcessBrowserTest {
     fn->set_extension(extension_.get());
     fn->set_has_callback(has_callback);
     return fn;
-  };
+  }
 
   Browser* browser_;
   scoped_refptr<extensions::Extension> extension_;