Adds PrintingContext implementation stub for Android.

chrome/browser/printing/printing_message_filter.h

Index: chrome/browser/printing/printing_message_filter.h
diff --git a/chrome/browser/printing/printing_message_filter.h b/chrome/browser/printing/printing_message_filter.h
index 1e512588b0259a4832fffd344c7d73deb8b7ab2e..38bad9420c8d35ce063d115c4525f4329e8ae998 100644
--- a/chrome/browser/printing/printing_message_filter.h
+++ b/chrome/browser/printing/printing_message_filter.h
@@ -54,15 +54,25 @@ class PrintingMessageFilter : public content::BrowserMessageFilter {
                           base::SharedMemoryHandle* browser_handle);
 #endif
 
-#if defined(OS_CHROMEOS)
+#if defined(OS_CHROMEOS) || defined(OS_ANDROID)
   // Used to ask the browser allocate a temporary file for the renderer
   // to fill in resulting PDF in renderer.
-  void OnAllocateTempFileForPrinting(base::FileDescriptor* temp_file_fd,
+  void OnAllocateTempFileForPrinting(int render_view_id,
+                                     base::FileDescriptor* temp_file_fd,
                                      int* sequence_number);
   void OnTempFileForPrintingWritten(int render_view_id, int sequence_number);
+#endif
+
+#if defined(OS_CHROMEOS)
   void CreatePrintDialogForFile(int render_view_id, const base::FilePath& path);
 #endif
 
+#if defined(OS_ANDROID)
+  // Updates the file descriptor for the PrintViewManagerBasic of a given
+  // render_view_id.
+  void UpdateFileDescriptor(int render_view_id, int fd);
+#endif
+
   // Given a render_view_id get the corresponding WebContents.
   // Must be called on the UI thread.
   content::WebContents* GetWebContentsForRenderView(int render_view_id);