Auto-install/uninstall shared module dependencies for extensions.

chrome/browser/extensions/extension_prefs.h

Index: chrome/browser/extensions/extension_prefs.h
diff --git a/chrome/browser/extensions/extension_prefs.h b/chrome/browser/extensions/extension_prefs.h
index a0eb1ec98df8cb9987521b39f03ab3f44350c24f..6a236a732b8a5a98d0e466a5960621d57af77098 100644
--- a/chrome/browser/extensions/extension_prefs.h
+++ b/chrome/browser/extensions/extension_prefs.h
@@ -81,6 +81,17 @@ class ExtensionPrefs : public ExtensionScopedPrefs,
     LAUNCH_DEFAULT = LAUNCH_REGULAR
   };
 
+  // This enum is used to store the reason an extension's install has been
+  // delayed.  Do not remove items or re-order this enum as it is used in
+  // preferences.
+  enum DelayReason {
+    DELAY_REASON_NONE = 0,
+    DELAY_REASON_GC = 1,
+    DELAY_REASON_WAIT_FOR_IDLE = 2,
+    DELAY_REASON_WAIT_FOR_IMPORTS = 3,
+  };
+
+
   // Creates base::Time classes. The default implementation is just to return
   // the current time, but tests can inject alternative implementations.
   class TimeProvider {
@@ -394,9 +405,10 @@ class ExtensionPrefs : public ExtensionScopedPrefs,
       const std::string& extension_id) const;
 
   // We've downloaded an updated .crx file for the extension, but are waiting
-  // for idle time to install it.
+  // to install it.
   void SetDelayedInstallInfo(const Extension* extension,
                              Extension::State initial_state,
+                             DelayReason delay_reason,
                              const syncer::StringOrdinal& page_ordinal);
 
   // Removes any delayed install information we have for the given
@@ -411,6 +423,8 @@ class ExtensionPrefs : public ExtensionScopedPrefs,
   scoped_ptr<ExtensionInfo> GetDelayedInstallInfo(
       const std::string& extension_id) const;
 
+  DelayReason GetDelayedInstallReason(const std::string& extension_id) const;
+
   // Returns information about all the extensions that have delayed install
   // information.
   scoped_ptr<ExtensionsInfo> GetAllDelayedInstallInfo() const;
@@ -430,6 +444,9 @@ class ExtensionPrefs : public ExtensionScopedPrefs,
   // Returns the creation flags mask for the extension.
   int GetCreationFlags(const std::string& extension_id) const;
 
+  // Returns the creation flags mask for a delayed install extension.
+  int GetDelayedInstallCreationFlags(const std::string& extension_id) const;
+
   // Returns true if the extension was installed from the Chrome Web Store.
   bool IsFromWebStore(const std::string& extension_id) const;