Move Tuple to base namespace.

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 ea06cd10711cdab3c586e87dc9e9964f260ef208..2332cbf490fd52caf3d9ff0f63b6719a2cb95fc5 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 get<2>(param);
+  return base::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, get<0>(param));
+  EXPECT_EQ(arg1, base::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, get<0>(param));
-  EXPECT_EQ(arg2, get<1>(param));
+  EXPECT_EQ(arg1, base::get<0>(param));
+  EXPECT_EQ(arg2, base::get<1>(param));
 }
 
 #if defined(USE_AURA)