Revert of Extract webkit_unit_tests from blink_web component.

third_party/WebKit/public/platform/WebCommon.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
         #if BLINK_COMMON_IMPLEMENTATION
             #define BLINK_COMMON_EXPORT __declspec(dllexport)
         #else // BLINK_COMMON_IMPLEMENTATION
             #define BLINK_COMMON_EXPORT __declspec(dllimport)
         #endif
     #else // defined(WIN32)
         #define BLINK_EXPORT __attribute__((visibility("default")))
         #define BLINK_PLATFORM_EXPORT __attribute__((visibility("default")))
         #define BLINK_COMMON_EXPORT __attribute__((visibility("default")))
     #endif
+
+    #if BLINK_IMPLEMENTATION && !BLINK_CORE_IMPLEMENTATION && !BLINK_MODULES_IMPLEMENTATION
+        #define BLINK_WEB_IMPLEMENTATION 1
+    #else
+        #define BLINK_WEB_IMPLEMENTATION 0
+    #endif
 #else // defined(COMPONENT_BUILD)
     #define BLINK_EXPORT
     #define BLINK_PLATFORM_EXPORT
     #define BLINK_COMMON_EXPORT
+
+    #define BLINK_WEB_IMPLEMENTATION 0
 #endif
 
 
 // -----------------------------------------------------------------------------
 // Basic types
 
 #include <stddef.h> // For size_t
 #include <stdint.h> // For int32_t
 
 namespace blink {
@@ skipping 24 matching lines @@
 #else
 #define BLINK_ASSERT(assertion) do { \
     if (!(assertion)) \
         failedAssertion(__FILE__, __LINE__, __FUNCTION__, #assertion); \
 } while (0)
 #endif
 
 #define BLINK_ASSERT_NOT_REACHED() BLINK_ASSERT(0)
 
 #endif