https://bugs.webkit.org/show_bug.cgi?id=74591

Reviewed by Kent Tamura.

Changing ColorChooser to address issues raised in Bug 65897.
Chrome::createColorChooser will return a WebCore::ColorChooser instance
so the WebCore side (ColorInputType) and call the WebKit side. We pass the ColorChooserClient as an argument
to Chrome::createColorChooser so the WebKit side can call callbacks, didEndChooser and didChooseColor.

* html/ColorInputType.cpp:
(WebCore::ColorInputType::~ColorInputType):
(WebCore::ColorInputType::setValue):
(WebCore::ColorInputType::handleDOMActivateEvent): Calls createColorChooser to open the color chooser.
(WebCore::ColorInputType::detach):
(WebCore::ColorInputType::didEndChooser): Release the ColorChooser object.
(WebCore::ColorInputType::endColorChooser):
(WebCore::ColorInputType::updateColorSwatch): Added argument so it will compile again.
* html/ColorInputType.h:
* html/HTMLInputElement.cpp:
(WebCore::HTMLInputElement::selectColorInColorChooser):
* loader/EmptyClients.h:
(WebCore::EmptyChromeClient::createColorChooser):
* loader/FrameLoader.cpp:
* page/Chrome.cpp:
(WebCore::Chrome::createColorChooser): Opens the color chooser. Returns a ColorChooser PassOwnPtr.
* page/Chrome.h:
* page/ChromeClient.h:
* platform/ColorChooser.h:
(WebCore::ColorChooser::~ColorChooser):
(WebCore::ColorChooser::setSelectedColor):
(WebCore::ColorChooser::endChooser):
* platform/ColorChooserClient.h: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@103168 268f45cc-cd09-0410-ab3c-d52691b4dbfc