Remove the unused parts of PPB_PDF

chrome/renderer/pepper/pepper_flash_renderer_host.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/pepper/pepper_flash_renderer_host.h"
 
 #include <map>
 #include <vector>
 
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
-#include "components/pdf/renderer/ppb_pdf_impl.h"
+#include "components/pdf/renderer/pepper_pdf_host.h"
 #include "content/public/renderer/pepper_plugin_instance.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
 #include "ipc/ipc_message_macros.h"
 #include "net/http/http_util.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/trusted/ppb_browser_font_trusted.h"
 #include "ppapi/host/dispatch_host_message.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 346 matching lines @@
       host_->GetPluginInstance(pp_instance());
   if (plugin_instance &&
       plugin_instance->IsRectTopmost(gfx::Rect(
           rect.point.x, rect.point.y, rect.size.width, rect.size.height)))
     return PP_OK;
   return PP_ERROR_FAILED;
 }
 
 int32_t PepperFlashRendererHost::OnInvokePrinting(
     ppapi::host::HostMessageContext* host_context) {
-  pdf::PPB_PDF_Impl::InvokePrintingForInstance(pp_instance());
+  pdf::PepperPDFHost::InvokePrintingForInstance(pp_instance());
   return PP_OK;
 }