Add policies to control Chrome OS power management

chrome/browser/policy/configuration_policy_handler.cc

Index: chrome/browser/policy/configuration_policy_handler.cc
diff --git a/chrome/browser/policy/configuration_policy_handler.cc b/chrome/browser/policy/configuration_policy_handler.cc
index 5587cae14c2c6582bdbdd08633edf7282a5e7b15..9bbd2b212ca59cd5c597c0eaef4ceeb62b16c0f0 100644
--- a/chrome/browser/policy/configuration_policy_handler.cc
+++ b/chrome/browser/policy/configuration_policy_handler.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/policy/configuration_policy_handler.h"
 
+#include <algorithm>
 #include <string>
 
 #include "base/file_path.h"
@@ -212,6 +213,59 @@ bool TypeCheckingPolicyHandler::CheckAndGetValue(const PolicyMap& policies,
   return true;
 }
 
+// IntRangePolicyHandlerBase implementation ------------------------------------
+
+IntRangePolicyHandlerBase::IntRangePolicyHandlerBase(
+    const char* policy_name,
+    int min,
+    int max,
+    bool clamp)
+    : TypeCheckingPolicyHandler(policy_name, base::Value::TYPE_INTEGER),
+      min_(min),
+      max_(max),
+      clamp_(clamp) {
+}
+
+bool IntRangePolicyHandlerBase::CheckPolicySettings(const PolicyMap& policies,
+                                                    PolicyErrorMap* errors) {
+  const base::Value* value;
+  return CheckAndGetValue(policies, errors, &value) &&
+      EnsureInRange(value, NULL, errors);
+}
+
+IntRangePolicyHandlerBase::~IntRangePolicyHandlerBase() {
+}
+
+bool IntRangePolicyHandlerBase::EnsureInRange(const base::Value* input,
+                                              int* output,
+                                              PolicyErrorMap* errors) {
+  if (!input)
+    return true;
+
+  int value;
+  if (!input->GetAsInteger(&value)) {
+    NOTREACHED();
+    return false;
+  }
+
+  if (value < min_ || value > max_) {
+    if (errors) {
+      errors->AddError(policy_name(),
+                       IDS_POLICY_OUT_OF_RANGE_ERROR,
+                       base::IntToString(value));
+    }
+
+    if (!clamp_)
+      return false;
+
+    value = std::min(std::max(value, min_), max_);
+  }
+
+  if (output)
+    *output = value;
+  return true;
+}
+
 // StringToIntEnumListPolicyHandler implementation -----------------------------
 
 StringToIntEnumListPolicyHandler::StringToIntEnumListPolicyHandler(
@@ -287,6 +341,56 @@ bool StringToIntEnumListPolicyHandler::Convert(const base::Value* input,
   return true;
 }
 
+// IntRangePolicyHandler implementation ----------------------------------------
+
+IntRangePolicyHandler::IntRangePolicyHandler(const char* policy_name,
+                                             const char* pref_path,
+                                             int min,
+                                             int max,
+                                             bool clamp)
+    : IntRangePolicyHandlerBase(policy_name, min, max, clamp),
+      pref_path_(pref_path) {
+}
+
+IntRangePolicyHandler::~IntRangePolicyHandler() {
+}
+
+void IntRangePolicyHandler::ApplyPolicySettings(const PolicyMap& policies,
+                                                PrefValueMap* prefs) {
+  const base::Value* value = policies.GetValue(policy_name());
+  int value_in_range;
+  if (value && EnsureInRange(value, &value_in_range, NULL)) {
+    prefs->SetValue(pref_path_,
+                    base::Value::CreateIntegerValue(value_in_range));
+  }
+}
+
+// IntPercentageToDoublePolicyHandler implementation ---------------------------
+
+IntPercentageToDoublePolicyHandler::IntPercentageToDoublePolicyHandler(
+    const char* policy_name,
+    const char* pref_path,
+    int min,
+    int max,
+    bool clamp)
+    : IntRangePolicyHandlerBase(policy_name, min, max, clamp),
+      pref_path_(pref_path) {
+}
+
+IntPercentageToDoublePolicyHandler::~IntPercentageToDoublePolicyHandler() {
+}
+
+void IntPercentageToDoublePolicyHandler::ApplyPolicySettings(
+    const PolicyMap& policies,
+    PrefValueMap* prefs) {
+  const base::Value* value = policies.GetValue(policy_name());
+  int percentage;
+  if (value && EnsureInRange(value, &percentage, NULL)) {
+    prefs->SetValue(pref_path_, base::Value::CreateDoubleValue(
+        static_cast<double>(percentage) / 100.));
+  }
+}
+
 // ExtensionListPolicyHandler implementation -----------------------------------
 
 ExtensionListPolicyHandler::ExtensionListPolicyHandler(const char* policy_name,