Pass correct length value in WebGamepads

ppapi/shared_impl/ppb_gamepad_shared.cc

Index: ppapi/shared_impl/ppb_gamepad_shared.cc
diff --git a/ppapi/shared_impl/ppb_gamepad_shared.cc b/ppapi/shared_impl/ppb_gamepad_shared.cc
index 7aa752a8aab561a2d8eba127baed419c77e5ed5d..2bf0b572acdbc50850c7786352da003c8c67fd47 100644
--- a/ppapi/shared_impl/ppb_gamepad_shared.cc
+++ b/ppapi/shared_impl/ppb_gamepad_shared.cc
@@ -4,14 +4,20 @@
 
 #include "ppapi/shared_impl/ppb_gamepad_shared.h"
 
+#include <algorithm>
+
 #include "base/basictypes.h"
 
 namespace ppapi {
 
+const size_t WebKitGamepads::kItemsLengthCap;
+
 void ConvertWebKitGamepadData(const WebKitGamepads& webkit_data,
                               PP_GamepadsSampleData* output_data) {
-  output_data->length = webkit_data.length;
-  for (unsigned i = 0; i < webkit_data.length; ++i) {
+  size_t length = std::min(WebKitGamepads::kItemsLengthCap,
+                           static_cast<const size_t>(webkit_data.length));
+  output_data->length = static_cast<unsigned>(length);
+  for (unsigned i = 0; i < length; ++i) {
     PP_GamepadSampleData& output_pad = output_data->items[i];
     const WebKitGamepad& webkit_pad = webkit_data.items[i];
     output_pad.connected = webkit_pad.connected ? PP_TRUE : PP_FALSE;