Remove bundled NPAPI Flash on Windows.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 8855dac81686ee8326650bdd62d040f79d963224..191ea4990a92f8a10203f2de9450f1f34e174f99 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -843,6 +843,11 @@ const char kPluginsEnabledInternalPDF[] = "plugins.enabled_internal_pdf3";
 // enable it by default, we'll want to do so only once.
 const char kPluginsEnabledNaCl[] = "plugins.enabled_nacl";
 
+// When bundled NPAPI Flash is removed, if at that point it is enabled while
+// Pepper Flash is disabled, we would like to turn on Pepper Flash. And we will
+// want to do so only once.
+const char kPluginsMigratedToPepperFlash[] = "plugins.migrated_to_pepper_flash";
+
 #if !defined(OS_ANDROID)
 const char kPluginsShowSetReaderDefaultInfobar[] =
     "plugins.show_set_reader_default";