Plumb CompositedDisplayList to WebViewImpl

public/web/WebView.h

Index: public/web/WebView.h
diff --git a/public/web/WebView.h b/public/web/WebView.h
index b4c51fe6eda0df1b81fa14f911169b41c8f43f63..e845845ef84c2c16bf1cceb8a7ee226d4549a4f3 100644
--- a/public/web/WebView.h
+++ b/public/web/WebView.h
@@ -32,6 +32,7 @@
 #define WebView_h
 
 #include "../platform/WebColor.h"
+#include "../platform/WebCompositedDisplayList.h"
 #include "../platform/WebDisplayMode.h"
 #include "../platform/WebFocusType.h"
 #include "../platform/WebPageVisibilityState.h"
@@ -452,6 +453,11 @@ public:
     virtual void setVisibilityState(WebPageVisibilityState visibilityState,
                                     bool isInitialState) { }
 
+    // Graphics -------------------------------------------------------------
+
+    virtual void setCompositedDisplayList(WebCompositedDisplayList*) { }

[jbroman, 2015/08/19 18:33:50]

Will the embedder ever call this? If not, suggest making this take
PassOwnPtr<WebCompositedDisplayList> and making it a concrete method on
WebViewImpl only.

[pdr., 2015/08/20 04:01:55]

Good idea. Done.

+    virtual WebCompositedDisplayList* compositedDisplayList() { return nullptr; }
+
     // PageOverlay ----------------------------------------------------------
 
     // Overlay this WebView with a solid color.