Reset page scale factor to 1.0 on navigation to a new page.

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index ee84fbfc31be8ffef88fe548329f7aeb731d54f6..3c1a2109311d4d3d010f904ab868376a4a17fc93 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -1780,6 +1780,16 @@ void Internals::setPageScaleFactor(float scaleFactor, int x, int y, ExceptionCod
     page->setPageScaleFactor(scaleFactor, IntPoint(x, y));
 }
 
+float Internals::pageScaleFactor(ExceptionCode& ec)
+{
+    Document* document = contextDocument();
+    if (!document || !document->page()) {
+        ec = INVALID_ACCESS_ERR;
+        return 1;
+    }
+    return document->page()->pageScaleFactor();
+}
+
 void Internals::webkitWillEnterFullScreenForElement(Document* document, Element* element)
 {
     if (!document)