Enable browser plugin compositing by default, but add a flag to disable it.

content/public/common/content_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/common/content_switches.h"
 
 namespace switches {
 
 // By default, file:// URIs cannot read other file:// URIs. This is an
 // override for developers who need the old behavior for testing.
@@ skipping 242 matching lines @@
 // Enable hardware accelerated page painting.
 const char kEnableAcceleratedPainting[]     = "enable-accelerated-painting";
 
 // Enable gpu-accelerated SVG/W3C filters.
 const char kEnableAcceleratedFilters[]      = "enable-accelerated-filters";
 
 // Turns on extremely verbose logging of accessibility events.
 const char kEnableAccessibilityLogging[]    = "enable-accessibility-logging";
 
 // Enables browser plugin compositing experiment.
-const char kEnableBrowserPluginCompositing[] =
-    "enable-browser-plugin-compositing";
+const char kDisableBrowserPluginCompositing[] =
+    "disable-browser-plugin-compositing";
 
 // Enables browser plugin for all types of pages.
 const char kEnableBrowserPluginForAllViewTypes[] =
     "enable-browser-plugin-for-all-view-types";
 
 const char kEnableBrowserPluginPointerLock[] =
     "enable-browser-plugin-pointer-lock";
 
 // Enable/Disable the creation of compositing layers for fixed position
 // elements. Three options are needed to support four possible scenarios:
@@ skipping 524 matching lines @@
     = "disable-fixed-position-creates-stacking-context";
 
 // Defer image decoding in WebKit until painting.
 const char kEnableDeferredImageDecoding[] = "enable-deferred-image-decoding";
 
 // Disables history navigation in response to horizontal overscroll.
 const char kDisableOverscrollHistoryNavigation[] =
     "disable-overscroll-history-navigation";
 
 }  // namespace switches