Add field-initializing constructors to generated mojo structs.

mojo/public/cpp/bindings/tests/equals_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <utility>
 
 #include "base/message_loop/message_loop.h"
 #include "mojo/public/interfaces/bindings/tests/test_structs.mojom.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace test {
 
 namespace {
 
 RectPtr CreateRect() {
-  RectPtr r = Rect::New();
-  r->x = 1;
-  r->y = 2;
-  r->width = 3;
-  r->height = 4;
-  return r;
+  return Rect::New(1, 2, 3, 4);
 }
 
 using EqualsTest = testing::Test;
 
 }  // namespace
 
 TEST_F(EqualsTest, NullStruct) {
   RectPtr r1;
   RectPtr r2;
   EXPECT_TRUE(r1.Equals(r2));
   EXPECT_TRUE(r2.Equals(r1));
 
   r1 = CreateRect();
   EXPECT_FALSE(r1.Equals(r2));
   EXPECT_FALSE(r2.Equals(r1));
 }
 
 TEST_F(EqualsTest, Struct) {
   RectPtr r1(CreateRect());
   RectPtr r2(r1.Clone());
   EXPECT_TRUE(r1.Equals(r2));
   r2->y = 1;
   EXPECT_FALSE(r1.Equals(r2));
   r2.reset();
   EXPECT_FALSE(r1.Equals(r2));
 }
 
 TEST_F(EqualsTest, StructNested) {
-  RectPairPtr p1(RectPair::New());
-  p1->first = CreateRect();
-  p1->second = CreateRect();
+  RectPairPtr p1(RectPair::New(CreateRect(), CreateRect()));
   RectPairPtr p2(p1.Clone());
   EXPECT_TRUE(p1.Equals(p2));
   p2->second->width = 0;
   EXPECT_FALSE(p1.Equals(p2));
   p2->second.reset();
   EXPECT_FALSE(p1.Equals(p2));
 }
 
 TEST_F(EqualsTest, Array) {
-  NamedRegionPtr n1(NamedRegion::New());
-  n1->name.emplace("n1");
+  NamedRegionPtr n1(NamedRegion::New(std::string("n1")));
   n1->rects.emplace();
   n1->rects->push_back(CreateRect());
   NamedRegionPtr n2(n1.Clone());
   EXPECT_TRUE(n1.Equals(n2));
 
   n2->rects = base::nullopt;
   EXPECT_FALSE(n1.Equals(n2));
   n2->rects.emplace();
   EXPECT_FALSE(n1.Equals(n2));
 
@@ skipping 46 matching lines @@
   EXPECT_FALSE(req1.Equals(req2));
 
   SomeInterfacePtr inf2;
   req2 = MakeRequest(&inf2);
 
   EXPECT_FALSE(req1.Equals(req2));
 }
 
 }  // test
 }  // mojo