Use float for scroll offset.

third_party/WebKit/Source/core/html/ImageDocument.cpp

Index: third_party/WebKit/Source/core/html/ImageDocument.cpp
diff --git a/third_party/WebKit/Source/core/html/ImageDocument.cpp b/third_party/WebKit/Source/core/html/ImageDocument.cpp
index d583a3dfd1a8f60efc3e554609c60b3e95f3d429..fbd45ecc7f12271702235af0f334d11ac0a1cc19 100644
--- a/third_party/WebKit/Source/core/html/ImageDocument.cpp
+++ b/third_party/WebKit/Source/core/html/ImageDocument.cpp
@@ -300,13 +300,13 @@ void ImageDocument::imageClicked(int x, int y) {
 
     double scale = this->scale();
 
-    double scrollX =
-        x / scale - static_cast<double>(frame()->view()->width()) / 2;
-    double scrollY =
-        y / scale - static_cast<double>(frame()->view()->height()) / 2;
+    float scrollX =
+        x / scale - static_cast<float>(frame()->view()->width()) / 2;
+    float scrollY =
+        y / scale - static_cast<float>(frame()->view()->height()) / 2;
 
-    frame()->view()->setScrollPosition(DoublePoint(scrollX, scrollY),
-                                       ProgrammaticScroll);
+    frame()->view()->setScrollOffset(ScrollOffset(scrollX, scrollY),
+                                     ProgrammaticScroll);
   }
 }