Add report URL to safe search API functionality.

chrome/common/chrome_features.cc

Index: chrome/common/chrome_features.cc
diff --git a/chrome/common/chrome_features.cc b/chrome/common/chrome_features.cc
index e1c558bcde2c91b16cc46409eb3732333673bb01..b3e352ac4bc00f9e2fbf83d3ace15adc3a86711f 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -34,6 +34,9 @@ const base::Feature kRuntimeMemoryLeakDetector{
     "RuntimeMemoryLeakDetector", base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_CHROMEOS)
 
+const base::Feature kSafeSearchUrlReporting{"SafeSearchUrlReporting",
+                                            base::FEATURE_DISABLED_BY_DEFAULT};
+
 // A new user experience for transitioning into fullscreen and mouse pointer
 // lock states. The name is a misnomer (for historical reasons); affects both
 // Views and Android builds.