libchrome: Several upstreamable fixes from libchrome

base/bind_unittest.cc

Index: base/bind_unittest.cc
diff --git a/base/bind_unittest.cc b/base/bind_unittest.cc
index 615ad330a92957acbe53e9797010c607667366fb..de1886555df19e6696de67b0d6fae71b8a3d346a 100644
--- a/base/bind_unittest.cc
+++ b/base/bind_unittest.cc
@@ -63,6 +63,7 @@ static const int kChildValue = 2;
 
 class Parent {
  public:
+  virtual ~Parent() = default;
   void AddRef() const {}
   void Release() const {}
   virtual void VirtualSet() { value = kParentValue; }
@@ -72,18 +73,22 @@ class Parent {
 
 class Child : public Parent {
  public:
+  ~Child() override = default;
   void VirtualSet() override { value = kChildValue; }
   void NonVirtualSet() { value = kChildValue; }
 };
 
 class NoRefParent {
  public:
+  virtual ~NoRefParent() = default;
   virtual void VirtualSet() { value = kParentValue; }
   void NonVirtualSet() { value = kParentValue; }
   int value;
 };
 
 class NoRefChild : public NoRefParent {
+ public:
+  ~NoRefChild() override = default;
   void VirtualSet() override { value = kChildValue; }
   void NonVirtualSet() { value = kChildValue; }
 };