remvoe duplicate impl for SkImageInfo flattening

tests/SerializationTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapDevice.h"
 #include "SkBitmapSource.h"
 #include "SkCanvas.h"
@@ skipping 130 matching lines @@
 template<typename T>
 static T* TestFlattenableSerialization(T* testObj, bool shouldSucceed,
                                        skiatest::Reporter* reporter) {
     SkOrderedWriteBuffer writer(1024);
     writer.setFlags(SkOrderedWriteBuffer::kValidation_Flag);
     SerializationUtils<T>::Write(writer, testObj);
     size_t bytesWritten = writer.bytesWritten();
     REPORTER_ASSERT(reporter, SkAlign4(bytesWritten) == bytesWritten);
 
     unsigned char dataWritten[1024];
+    SkASSERT(bytesWritten <= sizeof(dataWritten));
     writer.writeToMemory(dataWritten);
 
     // Make sure this fails when it should (test with smaller size, but still multiple of 4)
     SkValidatingReadBuffer buffer(dataWritten, bytesWritten - 4);
     T* obj = NULL;
     SerializationUtils<T>::Read(buffer, &obj);
     REPORTER_ASSERT(reporter, !buffer.isValid());
     REPORTER_ASSERT(reporter, NULL == obj);
 
     // Make sure this succeeds when it should
@@ skipping 139 matching lines @@
 
         // Create a bitmap with a really large height
         SkBitmap invalidBitmap;
         invalidBitmap.setConfig(SkBitmap::kARGB_8888_Config, 256, 1000000000);
 
         // The deserialization should succeed, and the rendering shouldn't crash,
         // even when the device fails to initialize, due to its size
         TestBitmapSerialization(validBitmap, invalidBitmap, true, reporter);
 
         // Create a bitmap with a pixel ref too small
+        SkImageInfo info;
+        info.fWidth = 256;
+        info.fHeight = 256;
+        info.fColorType = kPMColor_SkColorType;
+        info.fAlphaType = kPremul_SkAlphaType;
+
         SkBitmap invalidBitmap2;
-        invalidBitmap2.setConfig(SkBitmap::kARGB_8888_Config, 256, 256);
-        invalidBitmap2.setPixelRef(SkNEW_ARGS(SkMallocPixelRef,
-            (NULL, 256, NULL)))->unref();
+        invalidBitmap2.setConfig(info);
+        
+        // Hack to force invalid, by making the pixelref smaller than its
+        // owning bitmap.
+        info.fWidth = 32;
+        info.fHeight = 1;
+        
+        invalidBitmap2.setPixelRef(SkMallocPixelRef::NewAllocate(
+                        info, invalidBitmap2.rowBytes(), NULL))->unref();
 
         // The deserialization should detect the pixel ref being too small and fail
         TestBitmapSerialization(validBitmap, invalidBitmap2, false, reporter);
     }
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS("Serialization", SerializationClass, Tests)