Update legacy Tuple-using code.

content/browser/renderer_host/input/input_router_impl_unittest.cc

Index: content/browser/renderer_host/input/input_router_impl_unittest.cc
diff --git a/content/browser/renderer_host/input/input_router_impl_unittest.cc b/content/browser/renderer_host/input/input_router_impl_unittest.cc
index 08562d320cf49ef6d319a9e85cdc16eb475a3a00..c8816ff5af258af1fab58862f64f405473642070 100644
--- a/content/browser/renderer_host/input/input_router_impl_unittest.cc
+++ b/content/browser/renderer_host/input/input_router_impl_unittest.cc
@@ -80,7 +80,7 @@ WebInputEvent& GetEventWithType(WebInputEvent::Type type) {
 bool GetIsShortcutFromHandleInputEventMessage(const IPC::Message* msg) {
   InputMsg_HandleInputEvent::Schema::Param param;
   InputMsg_HandleInputEvent::Read(msg, &param);
-  return param.c;
+  return get<2>(param);
 }
 
 template<typename MSG_T, typename ARG_T1>
@@ -88,7 +88,7 @@ void ExpectIPCMessageWithArg1(const IPC::Message* msg, const ARG_T1& arg1) {
   ASSERT_EQ(MSG_T::ID, msg->type());
   typename MSG_T::Schema::Param param;
   ASSERT_TRUE(MSG_T::Read(msg, &param));
-  EXPECT_EQ(arg1, param.a);
+  EXPECT_EQ(arg1, get<0>(param));
 }
 
 template<typename MSG_T, typename ARG_T1, typename ARG_T2>
@@ -98,8 +98,8 @@ void ExpectIPCMessageWithArg2(const IPC::Message* msg,
   ASSERT_EQ(MSG_T::ID, msg->type());
   typename MSG_T::Schema::Param param;
   ASSERT_TRUE(MSG_T::Read(msg, &param));
-  EXPECT_EQ(arg1, param.a);
-  EXPECT_EQ(arg2, param.b);
+  EXPECT_EQ(arg1, get<0>(param));
+  EXPECT_EQ(arg2, get<1>(param));
 }
 
 #if defined(USE_AURA)