Move file chooser from RenderView(Host) to RenderFrame(Host).

content/browser/frame_host/render_frame_host_delegate.h

Index: content/browser/frame_host/render_frame_host_delegate.h
diff --git a/content/browser/frame_host/render_frame_host_delegate.h b/content/browser/frame_host/render_frame_host_delegate.h
index 9054ea9f36cc48e926d67d46abe957dd11b7ad7a..c1cb9fb65c9afabba75009c352e6d83dd11cd6ec 100644
--- a/content/browser/frame_host/render_frame_host_delegate.h
+++ b/content/browser/frame_host/render_frame_host_delegate.h
@@ -38,6 +38,7 @@ class WakeLockServiceContext;
 class WebContents;
 struct AXEventNotificationDetails;
 struct ContextMenuParams;
+struct FileChooserParams;
 struct TransitionLayerData;
 
 // An interface implemented by an object interested in knowing about the state
@@ -81,6 +82,10 @@ class CONTENT_EXPORT RenderFrameHostDelegate {
                                       bool is_reload,
                                       IPC::Message* reply_msg) {}
 
+  // Called when a file selection is to be done.
+  virtual void RunFileChooser(RenderFrameHost* render_frame_host,
+                              const FileChooserParams& params) {}
+
   // Another page accessed the top-level initial empty document, which means it
   // is no longer safe to display a pending URL without risking a URL spoof.
   virtual void DidAccessInitialDocument() {}