Change default mode of extension install verification

chrome/browser/extensions/install_verifier.cc

Index: chrome/browser/extensions/install_verifier.cc
diff --git a/chrome/browser/extensions/install_verifier.cc b/chrome/browser/extensions/install_verifier.cc
index 7f06c68ac03f299d2161d0b08be6470fcbba0784..642457dc8efd4419bfb0269bd4e5e641f435d294 100644
--- a/chrome/browser/extensions/install_verifier.cc
+++ b/chrome/browser/extensions/install_verifier.cc
@@ -30,6 +30,11 @@ enum VerifyStatus {
   NONE = 0,   // Do not request install signatures, and do not enforce them.
   BOOTSTRAP,  // Request install signatures, but do not enforce them.
   ENFORCE,    // Request install signatures, and enforce them.
+
+  // This is used in histograms - do not remove or reorder entries above! Also
+  // the "MAX" item below should always be the last element.
+
+  VERIFY_STATUS_MAX
 };
 
 #if defined(GOOGLE_CHROME_BUILD)
@@ -49,7 +54,7 @@ VerifyStatus GetExperimentStatus() {
     return ENFORCE;
   }
 
-  VerifyStatus default_status = BOOTSTRAP;
+  VerifyStatus default_status = NONE;
 
   if (group == "Enforce")
     return ENFORCE;
@@ -141,6 +146,11 @@ bool InstallVerifier::NeedsVerification(const Extension& extension) {
 }
 
 void InstallVerifier::Init() {
+  UMA_HISTOGRAM_ENUMERATION("ExtensionInstallVerifier.ExperimentStatus",
+                            GetExperimentStatus(), VERIFY_STATUS_MAX);
+  UMA_HISTOGRAM_ENUMERATION("ExtensionInstallVerifier.ActualStatus",
+                            GetStatus(), VERIFY_STATUS_MAX);
+
   const base::DictionaryValue* pref = prefs_->GetInstallSignature();
   if (pref) {
     scoped_ptr<InstallSignature> signature_from_prefs =