pdf: Create a separate component for using the pdf pepper plugin.

chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.h

Index: chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.h
diff --git a/chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.h b/chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.h
index 3bb25b0750addfb0dce5415ccc446230e295d1b0..ab8c5d338167c34cb114b8d57c6afdaa84c3642e 100644
--- a/chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.h
+++ b/chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.h
@@ -9,12 +9,15 @@
 #include "ui/views/widget/widget_observer.h"
 
 class OpenPDFInReaderBubbleView;
-class OpenPDFInReaderPromptDelegate;
 
 namespace content {
 class WebContents;
 }
 
+namespace pdf {
+class OpenPDFInReaderPromptDelegate;
+}
+
 // A Page Action image view for the "Open PDF in Reader" bubble.
 class OpenPDFInReaderView : public views::ImageView,
                             public views::WidgetObserver {
@@ -39,7 +42,7 @@ class OpenPDFInReaderView : public views::ImageView,
   OpenPDFInReaderBubbleView* bubble_;
 
   // Weak pointer; owned by the PDFTabHelper of the currently active tab.
-  OpenPDFInReaderPromptDelegate* model_;
+  pdf::OpenPDFInReaderPromptDelegate* model_;
 
   DISALLOW_COPY_AND_ASSIGN(OpenPDFInReaderView);
 };