Clean up final uses of scoped_ptr<T>::PassAs() and remove it.

base/memory/scoped_ptr_unittest.cc

Index: base/memory/scoped_ptr_unittest.cc
diff --git a/base/memory/scoped_ptr_unittest.cc b/base/memory/scoped_ptr_unittest.cc
index 3da8d3bd708ffebfafc178a8dad23ddb1b06c56b..c1e0e5622ad585ebc4ce4ae79533cbec7b5cbd56 100644
--- a/base/memory/scoped_ptr_unittest.cc
+++ b/base/memory/scoped_ptr_unittest.cc
@@ -91,11 +91,6 @@ scoped_ptr<ConDecLogger> TestReturnOfType(int* constructed) {
   return scoped_ptr<ConDecLogger>(new ConDecLogger(constructed));
 }
 
-scoped_ptr<ConDecLoggerParent> UpcastUsingPassAs(
-    scoped_ptr<ConDecLogger> object) {
-  return object.PassAs<ConDecLoggerParent>();
-}
-
 }  // namespace
 
 TEST(ScopedPtrTest, ScopedPtr) {
@@ -459,22 +454,6 @@ TEST(ScopedPtrTest, ReturnTypeBehavior) {
   EXPECT_EQ(0, constructed);
 }
 
-TEST(ScopedPtrTest, PassAs) {
-  int constructed = 0;
-  {
-    scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed));
-    EXPECT_EQ(1, constructed);
-    EXPECT_TRUE(scoper.get());
-
-    scoped_ptr<ConDecLoggerParent> scoper_parent;
-    scoper_parent = UpcastUsingPassAs(scoper.Pass());
-    EXPECT_EQ(1, constructed);
-    EXPECT_TRUE(scoper_parent.get());
-    EXPECT_FALSE(scoper.get());
-  }
-  EXPECT_EQ(0, constructed);
-}
-
 TEST(ScopedPtrTest, CustomDeleter) {
   double dummy_value;  // Custom deleter never touches this value.
   int deletes = 0;