4 files changed, 24 insertions, 1 deletions
diff --git a/webkit/glue/webframe_impl.cc b/webkit/glue/webframe_impl.cc
index 6c55b48..1d21d0a 100644
--- a/webkit/glue/webframe_impl.cc
+++ b/webkit/glue/webframe_impl.cc
@@ -1532,6 +1532,9 @@ void WebFrameImpl::CreateFrameView() {
 
   frame_->setView(view);
 
+  if (webview_impl_->GetIsTransparent())
+    view->setTransparent(true);
+
   // TODO(darin): The Mac code has a comment about this possibly being
   // unnecessary.  See installInFrame in WebCoreFrameBridge.mm
   if (frame_->ownerRenderer())
diff --git a/webkit/glue/webview.h b/webkit/glue/webview.h
index 600338f..2a9faec 100644
--- a/webkit/glue/webview.h
+++ b/webkit/glue/webview.h
@@ -226,6 +226,11 @@ class WebView : public WebWidget {
   // Returns development tools agent instance belonging to this view.
   virtual WebDevToolsAgent* GetWebDevToolsAgent() = 0;
 
+  // Makes the webview transparent. Useful if you want to have some custom
+  // background behind it.
+  virtual void SetIsTransparent(bool is_transparent) = 0;
+  virtual bool GetIsTransparent() const = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(WebView);
 };
diff --git a/webkit/glue/webview_impl.cc b/webkit/glue/webview_impl.cc
index 9906a27..0155b8b 100644
--- a/webkit/glue/webview_impl.cc
+++ b/webkit/glue/webview_impl.cc
@@ -366,7 +366,8 @@ WebViewImpl::WebViewImpl()
       drag_identity_(0),
       drop_effect_(DROP_EFFECT_DEFAULT),
       drop_accept_(false),
-      autocomplete_popup_showing_(false) {
+      autocomplete_popup_showing_(false),
+      is_transparent_(false) {
   // WebKit/win/WebView.cpp does the same thing, except they call the
   // KJS specific wrapper around this method. We need to have threading
   // initialized because CollatorICU requires it.
@@ -1825,6 +1826,14 @@ WebDevToolsAgentImpl* WebViewImpl::GetWebDevToolsAgentImpl() {
   return devtools_agent_.get();
 }
 
+void WebViewImpl::SetIsTransparent(bool is_transparent) {
+  is_transparent_ = is_transparent;
+}
+
+bool WebViewImpl::GetIsTransparent() const {
+  return is_transparent_;
+}
+
 void WebViewImpl::DidCommitLoad(bool* is_new_navigation) {
   if (is_new_navigation)
     *is_new_navigation = observed_new_navigation_;
diff --git a/webkit/glue/webview_impl.h b/webkit/glue/webview_impl.h
index 71a5a86..0b8db72 100644
--- a/webkit/glue/webview_impl.h
+++ b/webkit/glue/webview_impl.h
@@ -125,6 +125,9 @@ class WebViewImpl : public WebView, public base::RefCounted<WebViewImpl> {
   virtual WebDevToolsAgent* GetWebDevToolsAgent();
   WebDevToolsAgentImpl* GetWebDevToolsAgentImpl();
 
+  virtual void SetIsTransparent(bool is_transparent);
+  virtual bool GetIsTransparent() const;
+
   // WebViewImpl
 
   const WebKit::WebSize& size() const { return size_; }
@@ -351,6 +354,9 @@ class WebViewImpl : public WebView, public base::RefCounted<WebViewImpl> {
 
   scoped_ptr<WebDevToolsAgentImpl> devtools_agent_;
 
+  // Whether the webview is rendering transparently.
+  bool is_transparent_;
+
   // HACK: current_input_event is for ChromeClientImpl::show(), until we can fix
   // WebKit to pass enough information up into ChromeClient::show() so we can
   // decide if the window.open event was caused by a middle-mouse click