Adds PrintingContext implementation stub for Android.

chrome/browser/printing/print_view_manager_basic.h

Index: chrome/browser/printing/print_view_manager_basic.h
diff --git a/chrome/browser/printing/print_view_manager_basic.h b/chrome/browser/printing/print_view_manager_basic.h
index be1bc66bc07fc8a28dbbb249af90aeb0187feda3..869e4f03609b23b9d8f8cc034350fe9eeeae5577 100644
--- a/chrome/browser/printing/print_view_manager_basic.h
+++ b/chrome/browser/printing/print_view_manager_basic.h
@@ -8,6 +8,10 @@
 #include "chrome/browser/printing/print_view_manager_base.h"
 #include "content/public/browser/web_contents_user_data.h"
 
+#if defined(OS_ANDROID)
+#include "base/file_descriptor_posix.h"
+#endif
+
 namespace printing {
 
 // Manages the print commands for a WebContents - basic version.
@@ -17,10 +21,23 @@ class PrintViewManagerBasic
  public:
   virtual ~PrintViewManagerBasic();
 
+#if defined(OS_ANDROID)
+  // Sets the file descriptor into which PDF will be written.
+  void SetFileDescriptor(const base::FileDescriptor& file_descriptor);
+
+  // Gets the file descriptor into which PDF will be written.
+  base::FileDescriptor GetFileDescriptor() const;
+#endif
+
  private:
   explicit PrintViewManagerBasic(content::WebContents* web_contents);
   friend class content::WebContentsUserData<PrintViewManagerBasic>;
 
+#if defined(OS_ANDROID)
+  // The file descriptor the PDF of the page will be written.
+  base::FileDescriptor file_descriptor_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(PrintViewManagerBasic);
 };