Redo the Storage Partition directory layout to support guest tags and origin based partitions.

content/public/browser/storage_partition.h

Index: content/public/browser/storage_partition.h
diff --git a/content/public/browser/storage_partition.h b/content/public/browser/storage_partition.h
index d7c13630cd7414d5676f6f1cfe30c012dfb1089b..33308ea1e8a54705e8784a008f6490eb21b7cb97 100644
--- a/content/public/browser/storage_partition.h
+++ b/content/public/browser/storage_partition.h
@@ -5,7 +5,10 @@
 #ifndef CONTENT_PUBLIC_BROWSER_STORAGE_PARTITION_H_
 #define CONTENT_PUBLIC_BROWSER_STORAGE_PARTITION_H_
 
+#include <string>
+
 #include "base/basictypes.h"
+#include "base/file_path.h"
 
 namespace appcache {
 class AppCacheService;
@@ -37,6 +40,7 @@ class DOMStorageContext;
 // the cookies, localStorage, etc., that normal web renderers have access to.
 class StoragePartition {
  public:
+  virtual FilePath GetPath() = 0;
   virtual quota::QuotaManager* GetQuotaManager() = 0;
   virtual appcache::AppCacheService* GetAppCacheService() = 0;
   virtual fileapi::FileSystemContext* GetFileSystemContext() = 0;
@@ -44,6 +48,16 @@ class StoragePartition {
   virtual DOMStorageContext* GetDOMStorageContext() = 0;
   virtual IndexedDBContext* GetIndexedDBContext() = 0;
 
+  // Returns the base directory under which all the storage contexts hold their
+  // state for this partition.  The |profile_path| should be the base directory
+  // for this profile.
+  //
+  // TODO(ajwong): Remove this function from the public API once
+  // URLRequestContextGetter's creation is moved into StoragePartition.
+  static CONTENT_EXPORT FilePath GetPartitionPath(
+      const FilePath& profile_path,
+      const std::string& partition_id);
+
  protected:
   virtual ~StoragePartition() {}
 };