Update base dependencies to revision 76017 from the Chromium SVN.

cpp/src/base/lazy_instance.h

@@ -88,7 +88,7 @@ class LazyInstanceHelper {
     STATE_CREATED  = 2
   };
 
-  explicit LazyInstanceHelper(LinkerInitialized /* x */) { /* state_ is 0 */ }
+  explicit LazyInstanceHelper(LinkerInitialized /*unused*/) {/* state_ is 0 */}
   // Declaring a destructor (even if it's empty) will cause MSVC to register a
   // static initializer to register the empty destructor with atexit().
 
@@ -127,7 +127,7 @@ class LazyInstance : public LazyInstanceHelper {
         NeedsInstance()) {
       // Create the instance in the space provided by |buf_|.
       instance_ = Traits::New(buf_);
-      // Traits::Delete will be null for LeakyLazyInstannceTraits
+      // Traits::Delete will be null for LeakyLazyInstanceTraits
       void (*dtor)(void*) = Traits::Delete;
       CompleteInstance(this, (dtor == NULL) ? NULL : OnExit);
     }
@@ -141,6 +141,19 @@ class LazyInstance : public LazyInstanceHelper {
     return instance_;
   }
 
+  bool operator==(Type* p) {
+    switch (base::subtle::NoBarrier_Load(&state_)) {
+      case STATE_EMPTY:
+        return p == NULL;
+      case STATE_CREATING:
+        return static_cast<int8*>(static_cast<void*>(p)) == buf_;
+      case STATE_CREATED:
+        return p == instance_;
+      default:
+        return false;
+    }
+  }
+
  private:
   // Adapter function for use with AtExit.  This should be called single
   // threaded, so don't use atomic operations.

cpp/src/base/singleton.h

@@ -254,7 +254,7 @@ class Singleton {
   // Adapter function for use with AtExit().  This should be called single
   // threaded, so don't use atomic operations.
   // Calling OnExit while singleton is in use by other threads is a mistake.
-  static void OnExit(void* /* unused */) {
+  static void OnExit(void* /*unused*/) {
     // AtExit should only ever be register after the singleton instance was
     // created.  We should only ever get here with a valid instance_ pointer.
     Traits::Delete(

cpp/src/base/threading/platform_thread_posix.cc

@@ -189,7 +189,7 @@ void PlatformThread::SetName(const char* name) {
 // Mac is implemented in platform_thread_mac.mm.
 #else
 // static
-void PlatformThread::SetName(const char* /* name */) {
+void PlatformThread::SetName(const char* /*name*/) {
   // Leave it unimplemented.
 
   // (This should be relatively simple to implement for the BSDs; I