[Sync] Added some basic extension sync integration tests.

chrome/test/live_sync/single_client_live_themes_sync_test.cc

Index: chrome/test/live_sync/single_client_live_themes_sync_test.cc
diff --git a/chrome/test/live_sync/single_client_live_themes_sync_test.cc b/chrome/test/live_sync/single_client_live_themes_sync_test.cc
index f8cef03ed6a8265710350def184923caaeb4130d..18b9dcde7f4af432109f604787cfc33275bcf980 100644
--- a/chrome/test/live_sync/single_client_live_themes_sync_test.cc
+++ b/chrome/test/live_sync/single_client_live_themes_sync_test.cc
@@ -21,9 +21,9 @@ class SingleClientLiveThemesSyncTest : public LiveThemesSyncTest {
 // SetupSync()).
 
 IN_PROC_BROWSER_TEST_F(SingleClientLiveThemesSyncTest, CustomTheme) {
-  ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
+  ASSERT_TRUE(SetupSync());
 
-  scoped_refptr<Extension> theme = GetTheme(0);
+  scoped_refptr<Extension> theme = MakeTheme();
   ASSERT_EQ(NULL, GetCustomTheme(GetProfile(0)));
   ASSERT_EQ(NULL, GetCustomTheme(verifier()));
 
@@ -40,9 +40,9 @@ IN_PROC_BROWSER_TEST_F(SingleClientLiveThemesSyncTest, CustomTheme) {
 }
 
 IN_PROC_BROWSER_TEST_F(SingleClientLiveThemesSyncTest, NativeTheme) {
-  ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
+  ASSERT_TRUE(SetupSync());
 
-  scoped_refptr<Extension> theme = GetTheme(0);
+  scoped_refptr<Extension> theme = MakeTheme();
   SetTheme(GetProfile(0), theme);
   SetTheme(verifier(), theme);
   ASSERT_FALSE(UsingNativeTheme(GetProfile(0)));
@@ -64,9 +64,9 @@ IN_PROC_BROWSER_TEST_F(SingleClientLiveThemesSyncTest, NativeTheme) {
 }
 
 IN_PROC_BROWSER_TEST_F(SingleClientLiveThemesSyncTest, DefaultTheme) {
-  ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
+  ASSERT_TRUE(SetupSync());
 
-  scoped_refptr<Extension> theme = GetTheme(0);
+  scoped_refptr<Extension> theme = MakeTheme();
   SetTheme(GetProfile(0), theme);
   SetTheme(verifier(), theme);
   ASSERT_FALSE(UsingDefaultTheme(GetProfile(0)));