Implement sideload wipeout for Extensions.

chrome/common/extensions/feature_switch.cc

Index: chrome/common/extensions/feature_switch.cc
===================================================================
--- chrome/common/extensions/feature_switch.cc	(revision 162977)
+++ chrome/common/extensions/feature_switch.cc	(working copy)
@@ -31,6 +31,10 @@
         script_bubble(
             switches::kScriptBubble,
             FeatureSwitch::DEFAULT_DISABLED),
+        // TODO(finnur): Change to DEFAULT_DISABLED before checking in.
+        sideload_wipeout(
+            switches::kSideloadWipeout,
+            FeatureSwitch::DEFAULT_ENABLED),
         prompt_for_external_extensions(
             switches::kPromptForExternalExtensions,
             FeatureSwitch::DEFAULT_ENABLED)
@@ -52,6 +56,7 @@
   FeatureSwitch extensions_in_action_box;
   FeatureSwitch script_badges;
   FeatureSwitch script_bubble;
+  FeatureSwitch sideload_wipeout;
   FeatureSwitch prompt_for_external_extensions;
 };
 
@@ -76,6 +81,9 @@
 FeatureSwitch* FeatureSwitch::script_bubble() {
   return &g_common_switches.Get().script_bubble;
 }
+FeatureSwitch* FeatureSwitch::sideload_wipeout() {
+  return &g_common_switches.Get().sideload_wipeout;
+}
 FeatureSwitch* FeatureSwitch::prompt_for_external_extensions() {
   return &g_common_switches.Get().prompt_for_external_extensions;
 }