<webview>: Support zoom in WebUI

content/browser/browser_plugin/browser_plugin_embedder.h

Index: content/browser/browser_plugin/browser_plugin_embedder.h
diff --git a/content/browser/browser_plugin/browser_plugin_embedder.h b/content/browser/browser_plugin/browser_plugin_embedder.h
index c2c2a5062af53fcf6ad8d61c3264dd11f5342142..b7e89a796a59485b19f3ccc775d5bce1e645c0c0 100644
--- a/content/browser/browser_plugin/browser_plugin_embedder.h
+++ b/content/browser/browser_plugin/browser_plugin_embedder.h
@@ -67,6 +67,9 @@ class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver {
     factory_ = factory;
   }
 
+  // Sets the zoom level for all guests within this embedder.
+  void SetZoomLevel(double level);
+
   // WebContentsObserver implementation.
   virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
@@ -98,6 +101,8 @@ class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver {
 
   BrowserPluginGuestManager* GetBrowserPluginGuestManager();
 
+  void GuestCallbackSetZoomLevel(double level, BrowserPluginGuest* guest);
+
   // Message handlers.
 
   void OnAllocateInstanceID(int request_id);