Make platform apps get isolated storage by default.

chrome/common/extensions/extension.h

Index: chrome/common/extensions/extension.h
diff --git a/chrome/common/extensions/extension.h b/chrome/common/extensions/extension.h
index cceba31b5c1e473036c511ba2fc0db13a3da0768..c7e5ed5cd8b95f035e5583f24bff07c0ada0a507 100644
--- a/chrome/common/extensions/extension.h
+++ b/chrome/common/extensions/extension.h
@@ -664,7 +664,7 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
   bool is_platform_app() const;
   bool is_hosted_app() const;
   bool is_packaged_app() const;
-  bool is_storage_isolated() const { return is_app() && is_storage_isolated_; }
+  bool is_storage_isolated() const { return is_storage_isolated_; }
   const URLPatternSet& web_extent() const { return extent_; }
   const std::string& launch_local_path() const { return launch_local_path_; }
   const std::string& launch_web_url() const { return launch_web_url_; }
@@ -738,7 +738,8 @@ class Extension : public base::RefCountedThreadSafe<Extension> {
   // extension from the manifest.
 
   bool CheckMinimumChromeVersion(string16* error);
-  bool LoadAppIsolation(string16* error);
+  bool LoadAppIsolation(const ExtensionAPIPermissionSet& api_permissions,
+                        string16* error);
 
   bool LoadRequiredFeatures(string16* error);
   bool LoadName(string16* error);