Use a std::string to store return value from FieldTrialList::FindFullName()

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index fc9377f532558f7b71848ea4c054b63bdf2c258d..bfff171e89ab09c40a72da829ad6550643abebd8 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -1384,8 +1384,11 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
     const char kEnabledHttpOnlyGroupName[] = "EnabledHttpOnly";
     const char kDisabledAllGroupName[] = "DisabledAll";
 
-    base::StringPiece sdch_trial_group =
+    // Store in a string on return to keep underlying storage for
+    // StringPiece stable.
+    std::string sdch_trial_group_string =
         base::FieldTrialList::FindFullName(kSdchFieldTrialName);
+    base::StringPiece sdch_trial_group(sdch_trial_group_string);
     if (sdch_trial_group.starts_with(kEnabledAllGroupName)) {
       net::SdchManager::EnableSecureSchemeSupport(true);
       net::SdchManager::EnableSdchSupport(true);