Introduce v8-cache-strategies-for-cache-storage setting flags.

content/common/content_switches_internal.cc

 // Copyright (c) 2014 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/common/content_switches_internal.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 49 matching lines @@
     return V8_CACHE_OPTIONS_NONE;
   } else if (v8_cache_options == "parse") {
     return V8_CACHE_OPTIONS_PARSE;
   } else if (v8_cache_options == "code") {
     return V8_CACHE_OPTIONS_CODE;
   } else {
     return V8_CACHE_OPTIONS_DEFAULT;
   }
 }
 
+V8CacheStrategiesForCacheStorage GetV8CacheStrategiesForCacheStorage() {
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
+  std::string v8_cache_strategies = command_line.GetSwitchValueASCII(
+      switches::kV8CacheStrategiesForCacheStorage);
+  if (v8_cache_strategies.empty())
+    v8_cache_strategies =
+        base::FieldTrialList::FindFullName("V8CacheStrategiesForCacheStorage");
+  if (v8_cache_strategies == "none") {
+    return V8_CACHE_STRATEGIES_FOR_CACHE_STORAGE_NONE;
+  } else if (v8_cache_strategies == "normal") {
+    return V8_CACHE_STRATEGIES_FOR_CACHE_STORAGE_NORMAL;
+  } else if (v8_cache_strategies == "aggressive") {
+    return V8_CACHE_STRATEGIES_FOR_CACHE_STORAGE_AGGRESSIVE;
+  } else {
+    return V8_CACHE_STRATEGIES_FOR_CACHE_STORAGE_DEFAULT;
+  }
+}
+
 bool IsUseZoomForDSFEnabled() {
   static bool use_zoom_for_dsf_enabled_by_default =
       IsUseZoomForDSFEnabledByDefault();
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   bool enabled =
       (command_line->HasSwitch(switches::kEnableUseZoomForDSF) ||
        use_zoom_for_dsf_enabled_by_default) &&
       command_line->GetSwitchValueASCII(
           switches::kEnableUseZoomForDSF) != "false";
 
   return enabled;
 }
 
 } // namespace content