rtc::Buffer: Let SetData and AppendData accept anything with .data() and .size()

webrtc/base/array_view_unittest.cc

 /*
  *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "webrtc/base/array_view.h"
 #include "webrtc/base/buffer.h"
 #include "webrtc/base/checks.h"
 #include "webrtc/base/gunit.h"
 
 namespace rtc {
 
 namespace {
 
-namespace test_has_data_and_size {
-
-template <typename C, typename T>
-using DS = internal::HasDataAndSize<C, T>;
-
-template <typename DR, typename SR>
-struct Test1 {
-  DR data();
-  SR size();
-};
-static_assert(DS<Test1<int*, int>, int>::value, "");
-static_assert(DS<Test1<int*, int>, const int>::value, "");
-static_assert(DS<Test1<const int*, int>, const int>::value, "");
-static_assert(!DS<Test1<const int*, int>, int>::value, "");  // Wrong const.
-static_assert(!DS<Test1<char*, size_t>, int>::value, "");  // Wrong ptr type.
-
-struct Test2 {
-  int* data;
-  size_t size;
-};
-static_assert(!DS<Test2, int>::value, "");  // Because they aren't methods.
-
-struct Test3 {
-  int* data();
-};
-static_assert(!DS<Test3, int>::value, "");  // Because .size() is missing.
-
-class Test4 {
-  int* data();
-  size_t size();
-};
-static_assert(!DS<Test4, int>::value, "");  // Because methods are private.
-
-}  // namespace test_has_data_and_size
-
 template <typename T>
 void Call(ArrayView<T>) {}
 
 }  // namespace
 
 TEST(ArrayViewTest, TestConstructFromPtrAndArray) {
   char arr[] = "Arrr!";
   const char carr[] = "Carrr!";
   Call<const char>(arr);
   Call<const char>(carr);
@@ skipping 192 matching lines @@
   int a[] = {1, 2, 3};
   int b[] = {1, 2, 3};
   EXPECT_EQ(ArrayView<int>(a), ArrayView<int>(a));
   EXPECT_EQ(ArrayView<int>(), ArrayView<int>());
   EXPECT_NE(ArrayView<int>(a), ArrayView<int>(b));
   EXPECT_NE(ArrayView<int>(a), ArrayView<int>());
   EXPECT_NE(ArrayView<int>(a), ArrayView<int>(a, 2));
 }
 
 }  // namespace rtc