Fix for Alt+Left/Right page navigation with focus on radio buttons.

third_party/WebKit/Source/core/html/forms/RadioInputType.cpp

Index: third_party/WebKit/Source/core/html/forms/RadioInputType.cpp
diff --git a/third_party/WebKit/Source/core/html/forms/RadioInputType.cpp b/third_party/WebKit/Source/core/html/forms/RadioInputType.cpp
index 021da29c421ae1f109ce0994fa650a87472f7a8e..78532406e42ad9857016003ed2b89de17e0740b1 100644
--- a/third_party/WebKit/Source/core/html/forms/RadioInputType.cpp
+++ b/third_party/WebKit/Source/core/html/forms/RadioInputType.cpp
@@ -92,6 +92,9 @@ void RadioInputType::handleKeydownEvent(KeyboardEvent* event)
     if (key != "Up" && key != "Down" && key != "Left" && key != "Right")
         return;
 
+    if (event->ctrlKey() || event->metaKey() || event->altKey())
+        return;
+
     // Left and up mean "previous radio button".
     // Right and down mean "next radio button".
     // Tested in WinIE, and even for RTL, left still means previous radio button