Add ManagedModePolicyProvider and extension API to get and set policies.

chrome/browser/extensions/extension_managed_mode_api.h

Index: chrome/browser/extensions/extension_managed_mode_api.h
diff --git a/chrome/browser/extensions/extension_managed_mode_api.h b/chrome/browser/extensions/extension_managed_mode_api.h
index 75695d590686d200083d98172a5ff0e64cbcb994..102018906c1fcfdb57cd82638c106cc3929be63a 100644
--- a/chrome/browser/extensions/extension_managed_mode_api.h
+++ b/chrome/browser/extensions/extension_managed_mode_api.h
@@ -60,4 +60,27 @@ class EnterManagedModeFunction : public AsyncExtensionFunction {
   void SendResult(bool success);
 };
 
+
+class GetPolicyFunction : public SyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION_NAME("managedModePrivate.getPolicy")
+
+ protected:
+  virtual ~GetPolicyFunction();
+
+  // ExtensionFunction:
+  virtual bool RunImpl() OVERRIDE;
+};
+
+class SetPolicyFunction : public SyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION_NAME("managedModePrivate.setPolicy")
+
+ protected:
+  virtual ~SetPolicyFunction();
+
+  // ExtensionFunction:
+  virtual bool RunImpl() OVERRIDE;
+};
+
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MANAGED_MODE_API_H_