base: Add three helper functions to Values API.

chrome/browser/tab_contents/web_contents_unittest.cc

Index: chrome/browser/tab_contents/web_contents_unittest.cc
diff --git a/chrome/browser/tab_contents/web_contents_unittest.cc b/chrome/browser/tab_contents/web_contents_unittest.cc
index 8e773174b1240a078f5ca389ba87b1b2ae79f61a..f50c503931b9770283b062f2c0a5c25c5f337138 100644
--- a/chrome/browser/tab_contents/web_contents_unittest.cc
+++ b/chrome/browser/tab_contents/web_contents_unittest.cc
@@ -186,17 +186,16 @@ class TabContentsTest : public RenderViewHostTestHarness {
     // Set some (WebKit) user preferences.
     TestingPrefService* pref_services = profile->GetTestingPrefService();
 #if defined(TOOLKIT_USES_GTK)
-    pref_services->SetUserPref(prefs::kUsesSystemTheme,
-                               Value::CreateBooleanValue(false));
+    pref_services->SetUserPref(prefs::kUsesSystemTheme, base::FalseValue());
 #endif
     pref_services->SetUserPref(prefs::kDefaultCharset,
                                Value::CreateStringValue("utf8"));
     pref_services->SetUserPref(prefs::kWebKitDefaultFontSize,
                                Value::CreateIntegerValue(20));
     pref_services->SetUserPref(prefs::kWebKitTextAreasAreResizable,
-                               Value::CreateBooleanValue(false));
+                               base::FalseValue());
     pref_services->SetUserPref(prefs::kWebKitUsesUniversalDetector,
-                               Value::CreateBooleanValue(true));
+                               base::TrueValue());
     pref_services->SetUserPref("webkit.webprefs.foo",
                                Value::CreateStringValue("bar"));