Move allocate instance id to chrome/.

content/public/browser/browser_plugin_guest_delegate.h

Index: content/public/browser/browser_plugin_guest_delegate.h
diff --git a/content/public/browser/browser_plugin_guest_delegate.h b/content/public/browser/browser_plugin_guest_delegate.h
index 5f76532d2a11c1a5e40f4bd931efcfac10ca2088..a429e5921595d2b25f7be935363f1236957449ed 100644
--- a/content/public/browser/browser_plugin_guest_delegate.h
+++ b/content/public/browser/browser_plugin_guest_delegate.h
@@ -9,6 +9,10 @@
 #include "base/process/kill.h"
 #include "content/common/content_export.h"
 
+namespace base {
+class DictionaryValue;
+}  // namespace base
+
 namespace gfx {
 class Size;
 }  // namespace gfx
@@ -24,7 +28,7 @@ class CONTENT_EXPORT BrowserPluginGuestDelegate {
   virtual ~BrowserPluginGuestDelegate() {}
 
   // Notification that the embedder has completed attachment.
-  virtual void DidAttach() {}
+  virtual void DidAttach(const base::DictionaryValue& extra_params) {}
 
   // Informs the delegate that the embedder has been destroyed.
   virtual void EmbedderDestroyed() {}
@@ -45,9 +49,6 @@ class CONTENT_EXPORT BrowserPluginGuestDelegate {
       bool last_unlocked_by_target,
       const base::Callback<void(bool)>& callback) {}
 
-  // Request navigating the guest to the provided |src| URL.
-  virtual void NavigateGuest(const std::string& src) {}
-
   // Requests that the delegate destroy itself along with its associated
   // WebContents.
   virtual void Destroy() {}