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

chrome/renderer/pepper/pepper_pdf_host.cc

Index: chrome/renderer/pepper/pepper_pdf_host.cc
diff --git a/chrome/renderer/pepper/pepper_pdf_host.cc b/chrome/renderer/pepper/pepper_pdf_host.cc
index 399ae4d358ad5488bfbcac9c25e2bef6aace4875..af2a4dc67e958c835aad91027609a6a8fd9acac3 100644
--- a/chrome/renderer/pepper/pepper_pdf_host.cc
+++ b/chrome/renderer/pepper/pepper_pdf_host.cc
@@ -5,8 +5,8 @@
 #include "chrome/renderer/pepper/pepper_pdf_host.h"
 
 #include "base/strings/utf_string_conversions.h"
-#include "chrome/common/render_messages.h"
 #include "chrome/renderer/printing/print_web_view_helper.h"
+#include "components/pdf/common/pdf_messages.h"
 #include "content/app/strings/grit/content_strings.h"
 #include "content/public/common/referrer.h"
 #include "content/public/renderer/pepper_plugin_instance.h"
@@ -185,7 +185,7 @@ int32_t PepperPDFHost::OnHostMsgSetContentRestriction(
   if (!instance)
     return PP_ERROR_FAILED;
   instance->GetRenderView()->Send(
-      new ChromeViewHostMsg_PDFUpdateContentRestrictions(
+      new PDFHostMsg_PDFUpdateContentRestrictions(
           instance->GetRenderView()->GetRoutingID(), restrictions));
   return PP_OK;
 }
@@ -209,7 +209,7 @@ int32_t PepperPDFHost::OnHostMsgHasUnsupportedFeature(
   blink::WebView* view =
       instance->GetContainer()->element().document().frame()->view();
   content::RenderView* render_view = content::RenderView::FromWebView(view);
-  render_view->Send(new ChromeViewHostMsg_PDFHasUnsupportedFeature(
+  render_view->Send(new PDFHostMsg_PDFHasUnsupportedFeature(
       render_view->GetRoutingID()));
   return PP_OK;
 }
@@ -248,7 +248,7 @@ int32_t PepperPDFHost::OnHostMsgSaveAs(
       render_view->GetWebView()->mainFrame()->toWebLocalFrame();
   content::Referrer referrer(frame->document().url(),
                              frame->document().referrerPolicy());
-  render_view->Send(new ChromeViewHostMsg_PDFSaveURLAs(
+  render_view->Send(new PDFHostMsg_PDFSaveURLAs(
       render_view->GetRoutingID(), url, referrer));
   return PP_OK;
 }