[OriginChip] Add options for the position of the origin chip.

chrome/browser/search/search.cc

Index: chrome/browser/search/search.cc
diff --git a/chrome/browser/search/search.cc b/chrome/browser/search/search.cc
index d4387a18643cd922a5af636bcad74afaa67f0430..0436353682e7b122cd6b2cdb554f9c5d77ad85a0 100644
--- a/chrome/browser/search/search.cc
+++ b/chrome/browser/search/search.cc
@@ -69,7 +69,7 @@ const char kUseCacheableNTP[] = "use_cacheable_ntp";
 const char kPrefetchSearchResultsFlagName[] = "prefetch_results";
 const char kPrefetchSearchResultsOnSRP[] = "prefetch_results_srp";
 const char kDisplaySearchButtonFlagName[] = "display_search_button";
-const char kEnableOriginChipFlagName[] = "origin_chip";
+const char kOriginChipFlagName[] = "origin_chip";
 #if !defined(OS_IOS) && !defined(OS_ANDROID)
 const char kEnableQueryExtractionFlagName[] = "query_extraction";
 #endif
@@ -546,16 +546,30 @@ DisplaySearchButtonConditions GetDisplaySearchButtonConditions() {
 }
 
 bool ShouldDisplayOriginChip() {
+  return GetOriginChipPosition() != ORIGIN_CHIP_DISABLED;
+}
+
+OriginChipPosition GetOriginChipPosition() {
   const CommandLine* cl = CommandLine::ForCurrentProcess();
   if (cl->HasSwitch(switches::kDisableOriginChip)) {
-    return false;
-  } else if (cl->HasSwitch(switches::kEnableOriginChip)) {
-    return true;
+    return ORIGIN_CHIP_DISABLED;
+  } else if (cl->HasSwitch(switches::kEnableOriginChipLeadingLocationBar)) {
+    return ORIGIN_CHIP_LEADING_LOCATION_BAR;
+  } else if (cl->HasSwitch(switches::kEnableOriginChip) ||
+             cl->HasSwitch(switches::kEnableOriginChipTrailingLocationBar)) {
+    return ORIGIN_CHIP_TRAILING_LOCATION_BAR;
+  } else if (cl->HasSwitch(switches::kEnableOriginChipLeadingMenuButton)) {
+    return ORIGIN_CHIP_LEADING_MENU_BUTTON;
   }
 
   FieldTrialFlags flags;
-  return GetFieldTrialInfo(&flags) && GetBoolValueForFlagWithDefault(
-      kEnableOriginChipFlagName, false, flags);
+  if (!GetFieldTrialInfo(&flags))
+    return ORIGIN_CHIP_DISABLED;
+  uint64 value =
+      GetUInt64ValueForFlagWithDefault(kOriginChipFlagName, 0, flags);
+  return (value < ORIGIN_CHIP_NUM_VALUES) ?
+      static_cast<OriginChipPosition>(value) :
+      ORIGIN_CHIP_DISABLED;
 }
 
 GURL GetEffectiveURLForInstant(const GURL& url, Profile* profile) {