More regular Platform implementations in unit tests (reland.)

third_party/WebKit/Source/web/ImageDecodeBench.cpp

 // Copyright 2015 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.
 
 #ifdef WTF
 
 Provides a minimal wrapping of the Blink image decoders. Used to perform
 a non-threaded, memory-to-memory image decode using micro second accuracy
 clocks to measure image decode time. Optionally applies color correction
 during image decoding on supported platforms (default off). Usage:
 
   % ninja -C /out/Release image_decode_bench &&
      ./out/Release/image_decode_bench file [iterations]
 
 FIXME: Consider adding md5 checksum support to WTF. Use it to compute the
 decoded image frame md5 and output that value.
 
 FIXME: Consider integrating this tool in Chrome telemetry for realz, using
 the image corpii used to assess Blink image decode performance. Refer to
 http://crbug.com/398235#c103 and http://crbug.com/258324#c5
 
 #endif
 
 #include "config.h"
 
 #include "platform/SharedBuffer.h"
 #include "platform/image-decoders/ImageDecoder.h"
+#include "platform/testing/TestingPlatformSupport.h"
 #include "public/platform/Platform.h"
 #include "public/web/WebKit.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 
 #if defined(_WIN32)
 #if defined(WIN32_LEAN_AND_MEAN)
 #error Fix: WIN32_LEAN_AND_MEAN disables timeBeginPeriod/TimeEndPeriod.
 #endif
 #include <mmsystem.h>
@@ skipping 315 matching lines @@
         if (*end != '\0') {
             fprintf(stderr, "Third argument should be packet size. Default is "
                 "0, meaning to decode the entire image in one packet. You "
                 "supplied %s\n", argv[3]);
             exit(1);
         }
     }
 
     // Create a web platform without V8.
 
-    class WebPlatform : public blink::Platform {
+    class WebPlatform : public TestingPlatformSupport {
     public:
-        const unsigned char* getTraceCategoryEnabledFlag(const char*) override
-        {
-            return reinterpret_cast<const unsigned char *>("nope-none-nada");
-        }
-
-        void cryptographicallyRandomValues(unsigned char*, size_t) override
-        {
-            RELEASE_ASSERT_NOT_REACHED();
-        }
-
         void screenColorProfile(WebVector<char>* profile) override
         {
             getScreenColorProfile(profile); // Returns a whacked color profile.
         }
     };
 
     blink::initializeWithoutV8(new WebPlatform());
 
     // Set image decoding Platform options.
 
@@ skipping 26 matching lines @@
             exit(3);
         }
     }
 
     // Results to stdout.
 
     double averageTime = totalTime / static_cast<double>(iterations);
     printf("%f %f\n", totalTime, averageTime);
     return 0;
 }