Wire up the policy for controlling pinned apps in the ash launcher.

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 049e9a267141f85701c096f33a10b0b0187be420..8ddf542209d5b10421c2acdf39ac5dd6ffdb3b17 100644
--- a/chrome/browser/policy/configuration_policy_handler.h
+++ b/chrome/browser/policy/configuration_policy_handler.h
@@ -99,6 +99,35 @@ class SimplePolicyHandler : public TypeCheckingPolicyHandler {
   DISALLOW_COPY_AND_ASSIGN(SimplePolicyHandler);
 };
 
+// Implements additional checks for policies that are lists of extension IDs.
+class ExtensionListPolicyHandler : public TypeCheckingPolicyHandler {
+ public:
+  ExtensionListPolicyHandler(const char* policy_name,
+                             const char* pref_path,
+                             bool allow_wildcards);
+  virtual ~ExtensionListPolicyHandler();
+
+  // ConfigurationPolicyHandler methods:
+  virtual bool CheckPolicySettings(const PolicyMap& policies,
+                                   PolicyErrorMap* errors) OVERRIDE;
+  virtual void ApplyPolicySettings(const PolicyMap& policies,
+                                   PrefValueMap* prefs) OVERRIDE;
+
+ protected:
+  const char* pref_path() const;
+
+  // Runs sanity checks on the policy value and returns it in |extension_ids|.
+  bool CheckAndGetList(const PolicyMap& policies,
+                       PolicyErrorMap* errors,
+                       const base::ListValue** extension_ids);
+
+ private:
+  const char* pref_path_;
+  bool allow_wildcards_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionListPolicyHandler);
+};
+
 // ConfigurationPolicyHandler for the SyncDisabled policy.
 class SyncPolicyHandler : public TypeCheckingPolicyHandler {
  public: