Add favicon integration tests for FaviconDriverImpl

components/favicon/core/favicon_driver.h

Index: components/favicon/core/favicon_driver.h
diff --git a/components/favicon/core/favicon_driver.h b/components/favicon/core/favicon_driver.h
index 55c05c091f4e184fdba4ecf47243b60a4b7e0589..38714e85848598badf456f0433a7f1415acf4f9a 100644
--- a/components/favicon/core/favicon_driver.h
+++ b/components/favicon/core/favicon_driver.h
@@ -37,13 +37,6 @@ class FaviconDriver {
   // should rarely happen.
   virtual gfx::Image GetFavicon() const = 0;
 
-  // Returns true if we have the favicon for the page.
-  virtual bool FaviconIsValid() const = 0;
-
-  // Returns the URL of the current page, if any. Returns an invalid URL
-  // otherwise.
-  virtual GURL GetActiveURL() = 0;
-
  protected:
   FaviconDriver();
   virtual ~FaviconDriver();