Remove PNaCl's RequestFirstInstall, use resource throttle instead

chrome/browser/nacl_host/nacl_file_host.h

Index: chrome/browser/nacl_host/nacl_file_host.h
diff --git a/chrome/browser/nacl_host/nacl_file_host.h b/chrome/browser/nacl_host/nacl_file_host.h
index baf2d5a6afa3a229b70f2084fd04a15966118e55..a34c8ac5d3d9ab13ed9294e108ed7a2d6f595cf3 100644
--- a/chrome/browser/nacl_host/nacl_file_host.h
+++ b/chrome/browser/nacl_host/nacl_file_host.h
@@ -7,7 +7,6 @@
 
 #include <string>
 
-#include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 
 class GURL;
@@ -21,25 +20,9 @@ namespace IPC {
 class Message;
 }
 
-namespace nacl {
-struct PnaclInstallProgress;
-}
-
 // Opens NaCl Files in the Browser process, on behalf of the NaCl plugin.
 
 namespace nacl_file_host {
-typedef base::Callback<void(bool)> InstallCallback;
-typedef base::Callback<void(const nacl::PnaclInstallProgress&)>
-    InstallProgressCallback;
-
-// Ensure that PNaCl is installed.  Calls |done_callback| if PNaCl is already
-// installed.  Otherwise, issues a request to install and calls |done_callback|
-// after that request completes w/ success or failure.
-// If a request to install is issued, then |progress_callback| is called
-// with progress updates.
-void EnsurePnaclInstalled(
-    const InstallCallback& done_callback,
-    const InstallProgressCallback& progress_callback);
 
 // Open a PNaCl file (readonly) on behalf of the NaCl plugin.
 void GetReadonlyPnaclFd(