Add --enable-instant-extended-api to about:flags for all platforms

Adds --enable-instant-extended-api to about:flags for all platforms.  Also
removes the < DEV channel restriction.

BUG=163719
TEST=Observe about:flags on other platforms.
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/11414278

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@170749 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/about_flags.cc

@@ -494,7 +494,6 @@ const Experiment kExperiments[] = {
     kOsWin,
     SINGLE_VALUE_TYPE(switches::kEnableTabGroupsContextMenu)
   },
-#if defined(OS_CHROMEOS)
   {
     "enable-instant-extended-api",
     IDS_FLAGS_ENABLE_INSTANT_EXTENDED_API,
@@ -502,7 +501,6 @@ const Experiment kExperiments[] = {
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kEnableInstantExtendedAPI)
   },
-#endif
   {
     "static-ip-config",
     IDS_FLAGS_STATIC_IP_CONFIG_NAME,

chrome/browser/ui/search/search.cc

@@ -13,8 +13,7 @@ namespace chrome {
 namespace search {
 
 bool IsInstantExtendedAPIEnabled(const Profile* profile) {
-  return VersionInfo::GetChannel() <= VersionInfo::CHANNEL_DEV &&
-      !profile->IsOffTheRecord() &&
+  return !profile->IsOffTheRecord() &&
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableInstantExtendedAPI);
 }