Fix for Bug 50726 "Save extension list and "winning" prefs from extensions"

chrome/browser/extensions/test_extension_prefs.cc

Index: chrome/browser/extensions/test_extension_prefs.cc
diff --git a/chrome/browser/extensions/test_extension_prefs.cc b/chrome/browser/extensions/test_extension_prefs.cc
index 2cbb2d16857e1db7e58a60001988a81f1d76913d..9f685cd322bb3de36abc259f009ac0741687a3d3 100644
--- a/chrome/browser/extensions/test_extension_prefs.cc
+++ b/chrome/browser/extensions/test_extension_prefs.cc
@@ -17,6 +17,22 @@
 #include "chrome/common/json_pref_store.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+// Mock ExtensionPrefs class with artificial clock.
+class ExtensionPrefsFake : public ExtensionPrefs {
+ public:
+  explicit ExtensionPrefsFake(PrefService* prefs, const FilePath& root_dir_)
+    : ExtensionPrefs(prefs, root_dir_), currentTime(base::Time::Now()) {}
+  ~ExtensionPrefsFake() {}
+
+ protected:
+  mutable base::Time currentTime;
+  // For unit testing
+  base::Time GetCurrentTime() const {
+    currentTime += base::TimeDelta::FromSeconds(10);
+    return currentTime;
+  }
+};
+
 TestExtensionPrefs::TestExtensionPrefs() {
   EXPECT_TRUE(temp_dir_.CreateUniqueTempDir());
   preferences_file_ = temp_dir_.path().AppendASCII("Preferences");
@@ -42,7 +58,7 @@ void TestExtensionPrefs::RecreateExtensionPrefs() {
   // Create a |PrefService| instance that contains only user defined values.
   pref_service_.reset(PrefService::CreateUserPrefService(preferences_file_));
   ExtensionPrefs::RegisterUserPrefs(pref_service_.get());
-  prefs_.reset(new ExtensionPrefs(pref_service_.get(), temp_dir_.path()));
+  prefs_.reset(new ExtensionPrefsFake(pref_service_.get(), temp_dir_.path()));
 }
 
 scoped_refptr<Extension> TestExtensionPrefs::AddExtension(std::string name) {