Browser Plugin: Remove dependency on NPAPI

extensions/browser/guest_view/web_view/web_view_guest.cc

Index: extensions/browser/guest_view/web_view/web_view_guest.cc
diff --git a/extensions/browser/guest_view/web_view/web_view_guest.cc b/extensions/browser/guest_view/web_view/web_view_guest.cc
index d7afe16ea47a01312c45f9498b739d538c2c38f5..3c1102f923c5f6a8a659ba78142e843c128f63b6 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest.cc
+++ b/extensions/browser/guest_view/web_view/web_view_guest.cc
@@ -18,6 +18,7 @@
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
+#include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/resource_request_details.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/storage_partition.h"
@@ -243,8 +244,13 @@ void WebViewGuest::CreateWebContents(
 void WebViewGuest::DidAttachToEmbedder() {
   SetUpAutoSize();
 
+  bool allow_transparency = false;
+  attach_params()->GetBoolean(webview::kAttributeAllowTransparency,
+                              &allow_transparency);
+  SetAllowTransparency(allow_transparency);
+
   std::string name;
-  if (attach_params()->GetString(webview::kName, &name)) {
+  if (attach_params()->GetString(webview::kAttributeName, &name)) {
     // If the guest window's name is empty, then the WebView tag's name is
     // assigned. Otherwise, the guest window's name takes precedence over the
     // WebView tag's name.
@@ -262,7 +268,7 @@ void WebViewGuest::DidAttachToEmbedder() {
   }
 
   std::string src;
-  if (attach_params()->GetString("src", &src) && !src.empty())
+  if (attach_params()->GetString(webview::kAttributeSrc, &src) && !src.empty())
     NavigateGuest(src);
 
   if (GetOpener()) {
@@ -955,6 +961,10 @@ void WebViewGuest::SetZoom(double zoom_factor) {
     web_view_guest_delegate_->OnSetZoom(zoom_factor);
 }
 
+void WebViewGuest::SetAllowTransparency(bool allow) {
+  web_contents()->GetRenderViewHost()->GetView()->SetBackgroundOpaque(!allow);
+}
+
 void WebViewGuest::AddNewContents(content::WebContents* source,
                                   content::WebContents* new_contents,
                                   WindowOpenDisposition disposition,