Remove tabCapture about:flags switch.

chrome/common/extensions/feature_switch.cc

Index: chrome/common/extensions/feature_switch.cc
diff --git a/chrome/common/extensions/feature_switch.cc b/chrome/common/extensions/feature_switch.cc
index 5ea34456d69fe709ddfe76dcce9e03a164b6e884..860c78239a79b067aba33ea90b86ab4433d97380 100644
--- a/chrome/common/extensions/feature_switch.cc
+++ b/chrome/common/extensions/feature_switch.cc
@@ -29,19 +29,15 @@ class CommonSwitches {
         prompt_for_external_extensions(
             switches::kPromptForExternalExtensions,
 #if defined(OS_WIN)
-            FeatureSwitch::DEFAULT_ENABLED),
+            FeatureSwitch::DEFAULT_ENABLED) {}
 #else
-            FeatureSwitch::DEFAULT_DISABLED),
+            FeatureSwitch::DEFAULT_DISABLED) {}
 #endif
-        tab_capture(
-            switches::kTabCapture,
-            FeatureSwitch::DEFAULT_ENABLED) {}
 
   FeatureSwitch easy_off_store_install;
   FeatureSwitch script_badges;
   FeatureSwitch script_bubble;
   FeatureSwitch prompt_for_external_extensions;
-  FeatureSwitch tab_capture;
 };
 
 base::LazyInstance<CommonSwitches> g_common_switches =
@@ -61,10 +57,6 @@ FeatureSwitch* FeatureSwitch::script_bubble() {
 FeatureSwitch* FeatureSwitch::prompt_for_external_extensions() {
   return &g_common_switches.Get().prompt_for_external_extensions;
 }
-FeatureSwitch* FeatureSwitch::tab_capture() {
-  return &g_common_switches.Get().tab_capture;
-}
-
 
 FeatureSwitch::ScopedOverride::ScopedOverride(FeatureSwitch* feature,
                                               bool override_value)