ThumbnailTabHelper: Capture thumbnail when page load finishes

chrome/common/chrome_features.cc

 // Copyright 2016 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 "chrome/common/chrome_features.h"
 
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 #include "extensions/features/features.h"
 #include "ppapi/features/features.h"
@@ skipping 81 matching lines @@
 const base::Feature kBrowserTouchBar{"BrowserTouchBar",
                                      base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enables or disables keyboard focus for the tab strip.
 const base::Feature kTabStripKeyboardFocus{"TabStripKeyboardFocus",
                                            base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_MACOSX)
 
 const base::Feature kTabsInCbd{"TabsInCBD", base::FEATURE_DISABLED_BY_DEFAULT};
 
+// Whether to capture page thumbnails when the page load finishes (in addition
+// to any other times this might happen).
+const base::Feature kCaptureThumbnailOnLoadFinished{
+    "CaptureThumbnailOnLoadFinished", base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Whether to trigger app banner installability checks on page load.
 const base::Feature kCheckInstallabilityForBannerOnLoad{
     "CheckInstallabilityForBannerOnLoad", base::FEATURE_DISABLED_BY_DEFAULT};
 
 #if defined(OS_WIN)
 const base::Feature kCleanupToolUI{"CleanupToolUI",
                                    base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 #if defined(OS_ANDROID)
@@ skipping 245 matching lines @@
   return base::FeatureList::IsEnabled(features::kPrefService) ||
 #if BUILDFLAG(ENABLE_PACKAGE_MASH_SERVICES)
          base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
              switches::kMusConfig) == switches::kMash;
 #else
          false;
 #endif
 }
 
 }  // namespace features