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 a0d940900fdbf5580e35f25c85f4d88a6697f763..0963a31a1c8315e44c059d92d53ea91bfcf38daf 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