https://bugs.webkit.org/show_bug.cgi?id=90094

Reviewed by Adrienne Walker.

This patch adds the WEBKIT_IMPLEMENTATION = 1 define to
WebKitUnitTests.gyp. To get it to compile correctly, some string
and URL code was refactored and fixed, in particular GURL usage is
replaced with KURL usage.

* WebKit.gyp:
added WEBKIT_IMPLEMENTATION == 1 for unit test code when in shared library
added URLTestHelpers to exclusion in shared library build, because it depends on webkit_support

* WebKit.gypi:
added URLTestHelpers.h and .cpp to the build process

* WebKitUnitTests.gyp:
added WEBKIT_IMPLEMENTATION == 1 for unit test code when not in shared library.
note that in shared library build, RunAllTests.cpp does not have WEBKIT_IMPLEMENTATION == 1.

* public/WebDOMMessageEvent.h:
(WebKit::WebDOMMessageEvent::WebDOMMessageEvent):
* tests/AssociatedURLLoaderTest.cpp:
* tests/EventListenerTest.cpp:
* tests/FrameTestHelpers.cpp:
(WebKit::FrameTestHelpers::loadFrame):
* tests/FrameTestHelpers.h:
* tests/ListenerLeakTest.cpp:
(WebKit::ListenerLeakTest::RunTest):
* tests/PopupMenuTest.cpp:
* tests/RunAllTests.cpp:
* tests/URLTestHelpers.cpp: Added.
(URLTestHelpers):
(WebKit::URLTestHelpers::registerMockedURLFromBaseURL):
(WebKit::URLTestHelpers::registerMockedURLLoad):
* tests/URLTestHelpers.h: Copied from Source/WebKit/chromium/public/WebDOMMessageEvent.h.
(WebKit):
(URLTestHelpers):
(WebKit::URLTestHelpers::toKURL):
* tests/WebFrameTest.cpp:
* tests/WebPageNewSerializerTest.cpp:
* tests/WebPageSerializerTest.cpp:
* tests/WebViewTest.cpp:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@122344 268f45cc-cd09-0410-ab3c-d52691b4dbfc