[HBD] Add flag in about:flags for PPS on ALLOW mode.

chrome/common/chrome_features.cc

Index: chrome/common/chrome_features.cc
diff --git a/chrome/common/chrome_features.cc b/chrome/common/chrome_features.cc
index 90879c4ff5c6ee0ecf749bae087082cad21a89df..14d9ffda44ad25e5f75d048961c8cfaa33cf33f5 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -108,10 +108,12 @@ const base::Feature kMaterialDesignHistory{
 const base::Feature kMaterialDesignSettings{
     "MaterialDesignSettings", base::FEATURE_DISABLED_BY_DEFAULT};
 
+#if defined(ENABLE_PLUGINS)
 // Prefer HTML content by hiding Flash from the list of plugins.
 // https://crbug.com/626728
 const base::Feature kPreferHtmlOverPlugins{"PreferHtmlOverPlugins",
                                            base::FEATURE_DISABLED_BY_DEFAULT};
+#endif
 
 #if defined(OS_CHROMEOS)
 // Runtime flag that indicates whether this leak detector should be enabled in
@@ -120,6 +122,12 @@ const base::Feature kRuntimeMemoryLeakDetector{
     "RuntimeMemoryLeakDetector", base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_CHROMEOS)
 
+#if defined(ENABLE_PLUGINS)
+// Disables Plugin Power Saver when Flash is in ALLOW mode.
+const base::Feature kRunAllFlashInAllowMode{"RunAllFlashInAllowMode",
+                                            base::FEATURE_DISABLED_BY_DEFAULT};
+#endif
+
 const base::Feature kSafeSearchUrlReporting{"SafeSearchUrlReporting",
                                             base::FEATURE_DISABLED_BY_DEFAULT};