Add CDM allocator interface.

webkit/media/crypto/ppapi/linked_ptr.h

 // Copyright (c) 2011 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.
 //
+// This is a copy of base/linked_ptr.h with CHECKS/DCHECKS replaced with
+// PP_DCHECKs.
+//
 // A "smart" pointer type with reference tracking.  Every pointer to a
 // particular object is kept on a circular linked list.  When the last pointer
 // to an object is destroyed or reassigned, the object is deleted.
 //
 // Used properly, this deletes the object when the last reference goes away.
 // There are several caveats:
 // - Like all reference counting schemes, cycles lead to leaks.
 // - Each smart pointer is actually two pointers (8 bytes instead of 4).
 // - Every time a pointer is released, the entire list of pointers to that
 //   object is traversed.  This class is therefore NOT SUITABLE when there
@@ skipping 12 matching lines @@
 //
 // Thread Safety:
 //   A linked_ptr is NOT thread safe. Copying a linked_ptr object is
 //   effectively a read-write operation.
 //
 // Alternative: to linked_ptr is shared_ptr, which
 //  - is also two pointers in size (8 bytes for 32 bit addresses)
 //  - is thread safe for copying and deletion
 //  - supports weak_ptrs
 
-#ifndef BASE_MEMORY_LINKED_PTR_H_
-#define BASE_MEMORY_LINKED_PTR_H_
+#ifndef WEBKIT_MEDIA_CRYPTO_PPAPI_LINKED_PTR_H_
+#define WEBKIT_MEDIA_CRYPTO_PPAPI_LINKED_PTR_H_
 
-#include "base/logging.h"  // for CHECK macros
+#include "ppapi/cpp/logging.h"
 
 // This is used internally by all instances of linked_ptr<>.  It needs to be
 // a non-template class because different types of linked_ptr<> can refer to
 // the same object (linked_ptr<Superclass>(obj) vs linked_ptr<Subclass>(obj)).
 // So, it needs to be possible for different types of linked_ptr to participate
 // in the same circular linked list, so we need a single class type here.
 //
 // DO NOT USE THIS CLASS DIRECTLY YOURSELF.  Use linked_ptr<T>.
 class linked_ptr_internal {
  public:
@@ skipping 29 matching lines @@
 
   // Take over ownership of a raw pointer.  This should happen as soon as
   // possible after the object is created.
   explicit linked_ptr(T* ptr = NULL) { capture(ptr); }
   ~linked_ptr() { depart(); }
 
   // Copy an existing linked_ptr<>, adding ourselves to the list of references.
   template <typename U> linked_ptr(linked_ptr<U> const& ptr) { copy(&ptr); }
 
   linked_ptr(linked_ptr const& ptr) {
-    DCHECK_NE(&ptr, this);
+    PP_DCHECK(&ptr != this);
     copy(&ptr);
   }
 
   // Assignment releases the old value and acquires the new.
   template <typename U> linked_ptr& operator=(linked_ptr<U> const& ptr) {
     depart();
     copy(&ptr);
     return *this;
   }
 
@@ skipping 10 matching lines @@
     depart();
     capture(ptr);
   }
   T* get() const { return value_; }
   T* operator->() const { return value_; }
   T& operator*() const { return *value_; }
   // Release ownership of the pointed object and returns it.
   // Sole ownership by this linked_ptr object is required.
   T* release() {
     bool last = link_.depart();
-    CHECK(last);
+    PP_DCHECK(last);
+    (void)last;
     T* v = value_;
     value_ = NULL;
     return v;
   }
 
   bool operator==(const T* p) const { return value_ == p; }
   bool operator!=(const T* p) const { return value_ != p; }
   template <typename U>
   bool operator==(linked_ptr<U> const& ptr) const {
     return value_ == ptr.get();
@@ skipping 39 matching lines @@
 }
 
 // A function to convert T* into linked_ptr<T>
 // Doing e.g. make_linked_ptr(new FooBarBaz<type>(arg)) is a shorter notation
 // for linked_ptr<FooBarBaz<type> >(new FooBarBaz<type>(arg))
 template <typename T>
 linked_ptr<T> make_linked_ptr(T* ptr) {
   return linked_ptr<T>(ptr);
 }
 
-#endif  // BASE_MEMORY_LINKED_PTR_H_
+#endif  // WEBKIT_MEDIA_CRYPTO_PPAPI_LINKED_PTR_H_