Fix Resource leak in ActivityLoggerTest unit tests.

Source/web/tests/ActivityLoggerTest.cpp

Index: Source/web/tests/ActivityLoggerTest.cpp
diff --git a/Source/web/tests/ActivityLoggerTest.cpp b/Source/web/tests/ActivityLoggerTest.cpp
index 7e2f8497da1ec93af7ffbe26dfb17d56913927c5..f0f67ca3212043de7d26bb7cade811994cbf4167 100644
--- a/Source/web/tests/ActivityLoggerTest.cpp
+++ b/Source/web/tests/ActivityLoggerTest.cpp
@@ -9,6 +9,7 @@
 #include "bindings/core/v8/ScriptSourceCode.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8DOMActivityLogger.h"
+#include "public/web/WebCache.h"
 #include "web/WebLocalFrameImpl.h"
 #include "wtf/Forward.h"
 #include "wtf/text/Base64.h"
@@ -69,6 +70,11 @@ protected:
         FrameTestHelpers::loadFrame(m_webViewHelper.webViewImpl()->mainFrame(), "about:blank");
     }
 
+    ~ActivityLoggerTest()
+    {
+        WebCache::clear();
+    }
+
     void executeScriptInMainWorld(const String& script) const
     {
         v8::HandleScope scope(v8::Isolate::GetCurrent());