Adding functionality to print PDF embedded in the html page.

chrome/renderer/chrome_ppb_pdf_impl.cc

Index: chrome/renderer/chrome_ppb_pdf_impl.cc
===================================================================
--- chrome/renderer/chrome_ppb_pdf_impl.cc	(revision 117241)
+++ chrome/renderer/chrome_ppb_pdf_impl.cc	(working copy)
@@ -8,6 +8,7 @@
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/common/render_messages.h"
+#include "chrome/renderer/print_web_view_helper.h"
 #include "content/public/common/child_process_sandbox_support_linux.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
@@ -23,6 +24,7 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"

[Lei Zhang, 2012/01/12 22:10:20]

nit: WebNode before WebPluginContainer.

 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -334,6 +336,20 @@
   instance->delegate()->SaveURLAs(instance->plugin_url());
 }
 
+void Print(PP_Instance instance_id) {
+  PluginInstance* instance = HostGlobals::Get()->GetInstance(instance_id);
+  if (!instance)
+    return;
+
+  WebView* view = instance->container()->element().document().frame()->view();

[Lei Zhang, 2012/01/12 22:10:20]

nit: you can make instance->container()->element() a variable and then you don't
have to write it out again on line 349.

+  content::RenderView* render_view = content::RenderView::FromWebView(view);
+
+  PrintWebViewHelper* print_view_helper = PrintWebViewHelper::Get(render_view);
+  if (print_view_helper) {
+    print_view_helper->PrintNode(instance->container()->element());
+  }
+}
+
 const PPB_PDF ppb_pdf = {
   &GetLocalizedString,
   &GetResourceImage,
@@ -346,7 +362,8 @@
   &HistogramPDFPageCount,
   &UserMetricsRecordAction,
   &HasUnsupportedFeature,
-  &SaveAs
+  &SaveAs,
+  &Print
 };
 
 // static