Turn on component updater on chromeos, only for the pnacl component.

chrome/browser/component_updater/pnacl/pnacl_component_installer.h

Index: chrome/browser/component_updater/pnacl/pnacl_component_installer.h
diff --git a/chrome/browser/component_updater/pnacl/pnacl_component_installer.h b/chrome/browser/component_updater/pnacl/pnacl_component_installer.h
index 765b860fee09d9f37d9ba7be74e61baeb36ac6c7..5d58402803892213ae2dd5b60f75a060c836e03e 100644
--- a/chrome/browser/component_updater/pnacl/pnacl_component_installer.h
+++ b/chrome/browser/component_updater/pnacl/pnacl_component_installer.h
@@ -5,17 +5,62 @@
 #ifndef CHROME_BROWSER_COMPONENT_UPDATER_PNACL_PNACL_COMPONENT_INSTALLER_H_
 #define CHROME_BROWSER_COMPONENT_UPDATER_PNACL_PNACL_COMPONENT_INSTALLER_H_
 
+#include "base/files/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/component_updater/component_updater_service.h"
+#include "chrome/browser/component_updater/pnacl/pnacl_profile_observer.h"
+
 class CommandLine;
-class ComponentUpdateService;
 class Version;
 
 namespace base {
 class DictionaryValue;
 }
 
-// Component update registration for Portable Native Client.
-void RegisterPnaclComponent(ComponentUpdateService* cus,
-                            const CommandLine& command_line);
+// Component installer responsible for Portable Native Client files.
+// Files can be installed to a shared location, or be installed to
+// a per-user location.
+class PnaclComponentInstaller : public ComponentInstaller {
+ public:
+  PnaclComponentInstaller();
+
+  virtual ~PnaclComponentInstaller();
+
+  virtual void OnUpdateError(int error) OVERRIDE;
+
+  virtual bool Install(base::DictionaryValue* manifest,
+                       const base::FilePath& unpack_path) OVERRIDE;
+
+  // Register a PNaCl component for the first time.
+  void RegisterPnaclComponent(ComponentUpdateService* cus,
+                              const CommandLine& command_line);
+
+  // Check the PNaCl version again and re-register with the component
+  // updater service.
+  void ReRegisterPnacl();
+
+  bool per_user() const { return per_user_; }
+
+  // If per_user, function to call when profile is changed.
+  void OnProfileChange();
+
+  // Determine the base directory for storing each version of PNaCl.
+  base::FilePath GetPnaclBaseDirectory();
+
+  Version current_version() const { return current_version_; }
+
+  void set_current_version(const Version& v) { current_version_ = v; }
+
+  ComponentUpdateService* cus() const { return cus_; }
+
+ private:
+  bool per_user_;
+  scoped_ptr<PnaclProfileObserver> profile_observer_;
+  base::FilePath current_profile_path_;
+  Version current_version_;
+  ComponentUpdateService* cus_;
+  DISALLOW_COPY_AND_ASSIGN(PnaclComponentInstaller);
+};
 
 // Returns true if this browser is compatible with the given Pnacl component
 // manifest, with the version specified in the manifest in |version_out|.