GTTF: Move core parts of test_launcher down to base.

content/test/content_test_launcher.cc

Index: content/test/content_test_launcher.cc
diff --git a/content/test/content_test_launcher.cc b/content/test/content_test_launcher.cc
index 8f017900109c8bb5e01d16311feeddb7323c0746..4c4255709eec37aa8a92cc0dcca3500ff619554a 100644
--- a/content/test/content_test_launcher.cc
+++ b/content/test/content_test_launcher.cc
@@ -102,10 +102,6 @@ class ContentTestLauncherDelegate : public TestLauncherDelegate {
   ContentTestLauncherDelegate() {}
   virtual ~ContentTestLauncherDelegate() {}
 
-  virtual std::string GetEmptyTestName() OVERRIDE {
-    return std::string();
-  }
-
   virtual int RunTestSuite(int argc, char** argv) OVERRIDE {
     return ContentBrowserTestSuite(argc, argv).Run();
   }