Expose the capturePicture feature in RenderView for Android WebView legacy API support.

content/public/renderer/render_view.h

Index: content/public/renderer/render_view.h
diff --git a/content/public/renderer/render_view.h b/content/public/renderer/render_view.h
index 5cf2af9083b7b5e8a8000cd2e5b9dd228b89585f..f60847b9f28ce1b95c41baa7e7f92e81e2e5a978 100644
--- a/content/public/renderer/render_view.h
+++ b/content/public/renderer/render_view.h
@@ -9,10 +9,13 @@
 #include "base/string16.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_sender.h"
+#include "skia/ext/refptr.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNavigationPolicy.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPageVisibilityState.h"
 #include "ui/gfx/native_widget_types.h"
 
+class SkPicture;
+
 namespace webkit_glue {
 struct WebPreferences;
 }
@@ -163,6 +166,15 @@ class CONTENT_EXPORT RenderView : public IPC::Sender {
   // Returns a collection of security info about |frame|.
   virtual SSLStatus GetSSLStatusOfFrame(WebKit::WebFrame* frame) const = 0;
 
+#if defined(OS_ANDROID)
+  // Returns a SkPicture with the full contents of the current frame as part of
+  // the legacy Android WebView capture picture API. As it involves playing back
+  // all the drawing commands of the current frame it can have an important
+  // performance impact and should not be used for other purposes.
+  // Requires enabling the impl-side painting feature in the compositor.
+  virtual skia::RefPtr<SkPicture> CapturePicture() = 0;
+#endif
+
  protected:
   virtual ~RenderView() {}
 };