Made text inside <input> elements scrollable using touch gestures

Source/core/rendering/RenderBox.h

Index: Source/core/rendering/RenderBox.h
diff --git a/Source/core/rendering/RenderBox.h b/Source/core/rendering/RenderBox.h
index 4246b71d87c24afb127ab93e0bcc4457d1700030..d7ed5e25b6c98837f5e346ecf29f3c8e7c3aa348 100644
--- a/Source/core/rendering/RenderBox.h
+++ b/Source/core/rendering/RenderBox.h
@@ -464,10 +464,14 @@ public:
     bool hasAutoVerticalScrollbar() const { return hasOverflowClip() && (style()->overflowY() == OAUTO || style()->overflowY() == OOVERLAY); }
     bool hasAutoHorizontalScrollbar() const { return hasOverflowClip() && (style()->overflowX() == OAUTO || style()->overflowX() == OOVERLAY); }
     bool scrollsOverflow() const { return scrollsOverflowX() || scrollsOverflowY(); }
-    bool scrollsOverflowX() const { return hasOverflowClip() && (style()->overflowX() == OSCROLL || hasAutoHorizontalScrollbar()); }
-    bool scrollsOverflowY() const { return hasOverflowClip() && (style()->overflowY() == OSCROLL || hasAutoVerticalScrollbar()); }
+    virtual bool scrollsOverflowX() const { return hasOverflowClip() && (style()->overflowX() == OSCROLL || hasAutoHorizontalScrollbar()); }
+    virtual bool scrollsOverflowY() const { return hasOverflowClip() && (style()->overflowY() == OSCROLL || hasAutoVerticalScrollbar()); }
     bool usesCompositedScrolling() const;
 
+    // Elements such as the <input> field override this to specify that they are scrollable
+    // outside the context of the CSS overflow style
+    virtual bool isIntristicallyScrollable(ScrollbarOrientation orientation) const { return false; }
+
     bool hasUnsplittableScrollingOverflow() const;
     bool isUnsplittableForPagination() const;