Adds RefPtr::leakRef method to allow raw pointers that prevent destruct.

third_party/WebKit/Source/wtf/RefPtrTest.cpp

Index: third_party/WebKit/Source/wtf/RefPtrTest.cpp
diff --git a/third_party/WebKit/Source/wtf/RefPtrTest.cpp b/third_party/WebKit/Source/wtf/RefPtrTest.cpp
index e823520ef3d932f78a224807c6e501ac6f25c0f6..9e0975a3ecb94720d8068926820d4760c9361378 100644
--- a/third_party/WebKit/Source/wtf/RefPtrTest.cpp
+++ b/third_party/WebKit/Source/wtf/RefPtrTest.cpp
@@ -19,6 +19,19 @@ TEST(RefPtrTest, Basic) {
   EXPECT_TRUE(!string);
 }
 
+TEST(RefPtrTest, LeakRef) {
+  RefPtr<StringImpl> string = StringImpl::create("test");
+  EXPECT_TRUE(string);
+  EXPECT_TRUE(string->hasOneRef());
+  StringImpl* raw = string.get();
+  StringImpl* leaked = string.leakRef();
+  EXPECT_TRUE(!string);
+  EXPECT_TRUE(leaked);
+  EXPECT_TRUE(leaked->hasOneRef());
+  EXPECT_EQ(raw, leaked);
+  leaked->deref();

[Bugs Nash, 2017/02/20 01:53:38]

Needed to add this line to prevent memory leak which was causing asan bot to
fail. PTAnotherL?

+}
+
 TEST(RefPtrTest, MoveAssignmentOperator) {
   RefPtr<StringImpl> a = StringImpl::create("a");
   RefPtr<StringImpl> b = StringImpl::create("b");