Add support for parsing a 'partition' attribute on the <browser> tag.

content/renderer/browser_plugin/browser_plugin.h

Index: content/renderer/browser_plugin/browser_plugin.h
diff --git a/content/renderer/browser_plugin/browser_plugin.h b/content/renderer/browser_plugin/browser_plugin.h
index 29f9b6dc55798dafa0286f5266877d4e6bdaa855..2d0cc1d049b93417cffb217ba5b68c08b2aed362 100644
--- a/content/renderer/browser_plugin/browser_plugin.h
+++ b/content/renderer/browser_plugin/browser_plugin.h
@@ -35,6 +35,13 @@ class CONTENT_EXPORT BrowserPlugin :
   // Set the src attribute value of the BrowserPlugin instance and reset
   // the guest_crashed_ flag.
   void SetSrcAttribute(const std::string& src);
+  // The partition identifier string is stored as UTF-8.
+  std::string GetPartitionAttribute() const;
+  // This method can be successfully called only before the first navigation for
+  // this instance of BrowserPlugin. If an error occurs, the |error_message| is
+  // set appropriately to indicate the failure reason.
+  bool SetPartitionAttribute(const std::string& partition_id,
+                             std::string& error_message);
 
   // Inform the BrowserPlugin to update its backing store with the pixels in
   // its damage buffer.
@@ -119,10 +126,9 @@ class CONTENT_EXPORT BrowserPlugin :
   // Virtual to allow for mocking in tests.
   virtual float GetDeviceScaleFactor() const;
 
-  // Parses the source URL of the browser plugin from the element's attributes
-  // and outputs them.
-  bool ParseSrcAttribute(const WebKit::WebPluginParams& params,
-                         std::string* src);
+  // Parses the attributes of the browser plugin from the element's attributes
+  // and sets them appropriately.
+  void ParseAttributes(const WebKit::WebPluginParams& params);
 
   // Cleanup event listener state to free v8 resources when a BrowserPlugin
   // is destroyed.
@@ -143,6 +149,8 @@ class CONTENT_EXPORT BrowserPlugin :
   bool navigate_src_sent_;
   int64 parent_frame_;
   std::string src_;
+  std::string storage_partition_id_;
+  bool persist_storage_;
   typedef std::vector<v8::Persistent<v8::Function> > EventListeners;
   typedef std::map<std::string, EventListeners> EventListenerMap;
   EventListenerMap event_listener_map_;