Enable srcset support in HTMLImageElement

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index 5b5af6f77ddcfe95627bca412c554ccde6ab0ca9..a6a8074df95458c40104e706621d1391a772c828 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -458,15 +458,17 @@ public:
 
     void evaluateMediaQueryList();
 
-    // Never returns 0.
+    // Never returns 0
     FormController* formController();
     Vector<String> formElementsState() const;
     void setStateForNewFormElements(const Vector<String>&);
 
-    FrameView* view() const; // can be NULL
-    Frame* frame() const { return m_frame; } // can be NULL
-    Page* page() const; // can be NULL
-    Settings* settings() const; // can be NULL
+    FrameView* view() const; // can be null
+    Frame* frame() const { return m_frame; } // can be null
+    Settings* settings() const; // can be null
+    Page* page() const; // can be null

[cbiesinger, 2013/09/06 22:45:36]

Why the various changes up here?

+
+    float devicePixelRatio() const;
 
     PassRefPtr<Range> createRange();