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

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index b122262248ba5aedc70ad68f28dec4eee65a0b39..87f63e6e482f698eb77da2cc2625ad144e284022 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -51,7 +51,6 @@
 #include "chrome/renderer/net_benchmarking_extension.h"
 #include "chrome/renderer/page_load_histograms.h"
 #include "chrome/renderer/pepper/pepper_helper.h"
-#include "chrome/renderer/pepper/ppb_pdf_impl.h"
 #include "chrome/renderer/playback_extension.h"
 #include "chrome/renderer/plugins/chrome_plugin_placeholder.h"
 #include "chrome/renderer/plugins/plugin_uma.h"
@@ -75,10 +74,12 @@
 #include "components/dom_distiller/core/url_constants.h"
 #include "components/nacl/renderer/ppb_nacl_private_impl.h"
 #include "components/password_manager/content/renderer/credential_manager_client.h"
+#include "components/pdf/renderer/ppb_pdf_impl.h"
 #include "components/plugins/renderer/mobile_youtube_plugin.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #include "components/visitedlink/renderer/visitedlink_slave.h"
 #include "content/public/common/content_constants.h"
+#include "content/public/renderer/pepper_plugin_instance.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
@@ -258,6 +259,48 @@ void IsGuestViewApiAvailableToScriptContext(
 
 }  // namespace
 
+#if defined(ENABLE_FULL_PRINTING)
+// XXX: Move into its own file.

[raymes, 2014/08/25 03:11:49]

I guess you might as well move this into its own file now if you're happy to go
ahead with something like this?

[sadrul, 2014/08/26 17:09:54]

Done.

+class PDFPluginPrintDelegate : public pdf::PPB_PDF_Impl::PrintDelegate {
+ public:
+  PDFPluginPrintDelegate() {}
+  virtual ~PDFPluginPrintDelegate() {}
+
+  virtual bool IsPrintingEnabled(PP_Instance instance_id) OVERRIDE {
+    blink::WebElement element = GetWebElement(instance_id);
+    printing::PrintWebViewHelper* helper = GetPrintWebViewHelper(element);
+    return helper && helper->IsPrintingEnabled();
+  }
+
+  virtual void Print(PP_Instance instance_id) OVERRIDE {
+    blink::WebElement element = GetWebElement(instance_id);
+    printing::PrintWebViewHelper* helper = GetPrintWebViewHelper(element);
+    if (helper)
+      helper->PrintNode(element);
+  }
+
+ private:
+  blink::WebElement GetWebElement(PP_Instance instance_id) {
+    content::PepperPluginInstance* instance =
+        content::PepperPluginInstance::Get(instance_id);
+    if (!instance)
+      return blink::WebElement();
+    return instance->GetContainer()->element();
+  }
+
+  printing::PrintWebViewHelper* GetPrintWebViewHelper(
+      const blink::WebElement& element) {
+    if (element.isNull())
+      return NULL;
+    blink::WebView* view = element.document().frame()->view();
+    content::RenderView* render_view = content::RenderView::FromWebView(view);
+    return printing::PrintWebViewHelper::Get(render_view);
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(PDFPluginPrintDelegate);
+};
+#endif  // defined(ENABLE_FULL_PRINTING)
+
 ChromeContentRendererClient::ChromeContentRendererClient() {
   g_current_client = this;
 
@@ -421,6 +464,10 @@ void ChromeContentRendererClient::RenderThreadStarted() {
   if (blacklist::IsBlacklistInitialized())
     UMA_HISTOGRAM_BOOLEAN("Blacklist.PatchedInRenderer", true);
 #endif
+#if defined(ENABLE_FULL_PRINTING)
+  pdf_print_delegate_.reset(new PDFPluginPrintDelegate());
+  pdf::PPB_PDF_Impl::SetPrintDelegate(pdf_print_delegate_.get());
+#endif
 }
 
 void ChromeContentRendererClient::RenderFrameCreated(
@@ -1394,7 +1441,7 @@ const void* ChromeContentRendererClient::CreatePPAPIInterface(
     return nacl::GetNaClPrivateInterface();
 #endif  // DISABLE_NACL
   if (interface_name == PPB_PDF_INTERFACE)
-    return PPB_PDF_Impl::GetInterface();
+    return pdf::PPB_PDF_Impl::GetInterface();
 #endif
   return NULL;
 }