Add policies to control Chrome OS power management

chrome/browser/policy/configuration_policy_handler.h

Index: chrome/browser/policy/configuration_policy_handler.h
diff --git a/chrome/browser/policy/configuration_policy_handler.h b/chrome/browser/policy/configuration_policy_handler.h
index 8d75ddfb32c98bcae425a2e0c5b2cd1e15846c48..98efaf2fa57d12ac1e5830f2dbb10cd90ed9a8fd 100644
--- a/chrome/browser/policy/configuration_policy_handler.h
+++ b/chrome/browser/policy/configuration_policy_handler.h
@@ -137,6 +137,24 @@ class StringToIntEnumListPolicyHandler : public TypeCheckingPolicyHandler {
   DISALLOW_COPY_AND_ASSIGN(StringToIntEnumListPolicyHandler);
 };
 
+// A policy handler implementation that maps an int percentage value to a
+// double.
+class IntPercentageToDoublePolicyHandler : public TypeCheckingPolicyHandler {
+ public:
+  IntPercentageToDoublePolicyHandler(const char* policy_name,
+                                     const char* pref_path);
+
+  // ConfigurationPolicyHandler:
+  virtual void ApplyPolicySettings(const PolicyMap& policies,
+                                   PrefValueMap* prefs) OVERRIDE;
+
+ private:
+  // Name of the pref to write.
+  const char* pref_path_;
+
+  DISALLOW_COPY_AND_ASSIGN(IntPercentageToDoublePolicyHandler);
+};
+
 // Implements additional checks for policies that are lists of extension IDs.
 class ExtensionListPolicyHandler : public TypeCheckingPolicyHandler {
  public: