Revert[4] of add asserts around results from requestLock

tests/PixelRefTest.cpp

Index: tests/PixelRefTest.cpp
diff --git a/tests/PixelRefTest.cpp b/tests/PixelRefTest.cpp
index e13d0e07e5476804ced4dfeccf8748c02e578339..ed9ea87092f5c36cdc7eadc0e762a7f50741bb4a 100644
--- a/tests/PixelRefTest.cpp
+++ b/tests/PixelRefTest.cpp
@@ -1,8 +1,29 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
 #include "Test.h"
 
 #include "SkMallocPixelRef.h"
 #include "SkPixelRef.h"
 
+static void test_install(skiatest::Reporter* reporter) {
+    bool success;
+    SkImageInfo info = SkImageInfo::MakeN32Premul(0, 0);
+    SkBitmap bm;
+    // make sure we don't assert on an empty install
+    success = bm.installPixels(info, NULL, 0);
+    REPORTER_ASSERT(reporter, success);
+
+    // no pixels should be the same as setInfo()
+    info = SkImageInfo::MakeN32Premul(10, 10);
+    success = bm.installPixels(info, NULL, 0);
+    REPORTER_ASSERT(reporter, success);
+}
+
 class TestListener : public SkPixelRef::GenIDChangeListener {
 public:
     explicit TestListener(int* ptr) : fPtr(ptr) {}
@@ -43,4 +64,6 @@ DEF_TEST(PixelRef_GenIDChange, r) {
     REPORTER_ASSERT(r, 0 != pixelRef->getGenerationID());
     pixelRef->addGenIDChangeListener(NULL);
     pixelRef->notifyPixelsChanged();
+
+    test_install(r);
 }