Fix tests to avoid page scale reset when setting page scale.

Tools/DumpRenderTree/chromium/TestRunner/src/EventSender.cpp

Index: Tools/DumpRenderTree/chromium/TestRunner/src/EventSender.cpp
diff --git a/Tools/DumpRenderTree/chromium/TestRunner/src/EventSender.cpp b/Tools/DumpRenderTree/chromium/TestRunner/src/EventSender.cpp
index ff1897e68bede54111d86895c917c48bf0d2bf80..d9834edc540034ddb0a1194744bb246e29507925 100644
--- a/Tools/DumpRenderTree/chromium/TestRunner/src/EventSender.cpp
+++ b/Tools/DumpRenderTree/chromium/TestRunner/src/EventSender.cpp
@@ -301,6 +301,7 @@ EventSender::EventSender()
     bindMethod("gestureTwoFingerTap", &EventSender::gestureTwoFingerTap);
     bindMethod("zoomPageIn", &EventSender::zoomPageIn);
     bindMethod("zoomPageOut", &EventSender::zoomPageOut);
+    bindMethod("setInitialPageScaleOverride", &EventSender::setInitialPageScaleOverride);
     bindMethod("scalePageBy", &EventSender::scalePageBy);
 
     bindProperty("forceLayoutOnEvents", &forceLayoutOnEvents);
@@ -777,6 +778,16 @@ void EventSender::zoomPageOut(const CppArgumentList&, CppVariant* result)
     result->setNull();
 }
 
+void EventSender::setInitialPageScaleOverride(const CppArgumentList& arguments, CppVariant* result)
+{
+    if (arguments.size() != 1 || !arguments[0].isNumber())
+        return;
+
+    float pageScaleOverride = static_cast<float>(arguments[0].toDouble());
+    webview()->setInitialPageScaleOverride(pageScaleOverride);
+    result->setNull();
+}
+
 void EventSender::scalePageBy(const CppArgumentList& arguments, CppVariant* result)
 {
     if (arguments.size() < 3 || !arguments[0].isNumber() || !arguments[1].isNumber() || !arguments[2].isNumber())