https://bugs.webkit.org/show_bug.cgi?id=96134

Reviewed by Eric Carlson.

Source/WebCore:

Add a FrameLoaderClient function to determine whether the DNT header should be sent,
and plumb that new function down into the MediaPlayerPrivateAVFoundationObjC class.

Test: http/tests/media/video-donottrack.html

* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::mediaPlayerShouldSendDoNotTrackHTTPHeader):
    Pass the question on through to the FrameLoaderClient.
* html/HTMLMediaElement.h:
* loader/FrameLoaderClient.h:
(WebCore::FrameLoaderClient::shouldSendDoNotTrackHTTPHeader):
    Call through to the implementation in WebKit or WebKit2.
* platform/graphics/MediaPlayer.h:
(WebCore::MediaPlayerClient::mediaPlayerShouldSendDoNotTrackHTTPHeader):
    Pass the question on to the HTMLMediaElement.
* platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm:
(WebCore::MediaPlayerPrivateAVFoundationObjC::createAVAssetForURL):
    If we should send the DNT header, add it to the header options array
    when creating the AVAsset.

Source/WebKit/mac:

Add support for the shouldSendDoNotTrackHTTPHeader by passing the request
on to the WebFrameLoadDelegate.

* WebCoreSupport/WebFrameLoaderClient.h:
* WebCoreSupport/WebFrameLoaderClient.mm:
(WebFrameLoaderClient::shouldSendDoNotTrackHeader):
    Pass the question on to the WebFrameLoadDelegate.
* WebView/WebDelegateImplementationCaching.h:
(WebFrameLoadDelegateImplementationCache):
    Add an entry for the delegate's webViewShouldSendDoNotTrackHeader method.
* WebView/WebDelegateImplementationCaching.mm:
(CallResourceLoadDelegateReturningBoolean): Added a 0-parameter overloaded function.
* WebView/WebView.mm:
(-[WebView _cacheFrameLoadDelegateImplementations]): initialize the
    cached value for shouldSendDoNotTrackHeaderFunc.

Source/WebKit2:

Add support for the shouldSendDoNotTrackHTTPHeader by passing the request
on to the WebFrameLoadDelegate.

* Shared/APIClientTraits.cpp: Increment the interfaceSizes for
    WKBundlePageLoaderClient by the value of the new functions.
* Shared/APIClientTraits.h: Ditto.
* WebProcess/InjectedBundle/API/c/WKBundlePage.h: Add a new API to
    WKBundlePageLoaderClient and bump the version number.
* WebProcess/InjectedBundle/InjectedBundlePageLoaderClient.cpp:
(WebKit::InjectedBundlePageLoaderClient::shouldSendDoNotTrackHTTPHeader):
    Pass the question on to the client.
* WebProcess/InjectedBundle/InjectedBundlePageLoaderClient.h:
* WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:
(WebKit::WebFrameLoaderClient::shouldSendDoNotTrackHTTPHeader):
    Pass the question on to the bundle.
* WebProcess/WebCoreSupport/WebFrameLoaderClient.h:
* WebProcess/qt/QtBuiltinBundlePage.cpp:
(WebKit::QtBuiltinBundlePage::QtBuiltinBundlePage):
    Add an entry for the new function in the Qt loader client.

Tools:

Add a testRunner JS API for calling setShouldSendDoNotTrackHTTPHeader to DRT and
WTR. Add FrameLoaderClient client methods for retrieving that value.

* DumpRenderTree/TestRunner.cpp:
(setShouldSendDoNotTrackHTTPHeaderCallback): Pass through to the TestRunner.
(TestRunner::staticFunctions): Add the setShouldSendDoNotTrackHTTPHeader function.
* DumpRenderTree/TestRunner.h:
(TestRunner::setShouldSendDoNotTrackHTTPHeader): Simple setter.
(TestRunner::shouldSendDoNotTrackHTTPHeader): Simple getter.
* DumpRenderTree/mac/FrameLoadDelegate.mm:
(-[FrameLoadDelegate webViewShouldSendDoNotTrackHTTPHeader:]):
    Pass the question on to the TestRunner.
* WebKitTestRunner/InjectedBundle/Bindings/TestRunner.idl:
* WebKitTestRunner/InjectedBundle/InjectedBundlePage.cpp:
(WTR::InjectedBundlePage::InjectedBundlePage):
    Add the setShouldSendDoNotTrackHTTPHeader client function.
(WTR::InjectedBundlePage::shouldSendDoNotTrackHTTPHeader):
    Pass the question on to the TestRunner.
* WebKitTestRunner/InjectedBundle/InjectedBundlePage.h:
* WebKitTestRunner/InjectedBundle/TestRunner.cpp:
* WebKitTestRunner/InjectedBundle/TestRunner.h:
(WTR::TestRunner::shouldSendDoNotTrackHTTPHeader): Simple getter.
(WTR::TestRunner::setShouldSendDoNotTrackHTTPHeader): Simple Setter.

LayoutTests:

Add a new HTTP test ensuring the DNT header is passed correctly during video tests.

* http/tests/media/resources/video-donottrack-check-donottrack.php: Added.
* http/tests/media/video-donottrack-expected.txt: Added.
* http/tests/media/video-donottrack.html: Added.

Skip the new tests on platforms which do not support it:
* platform/chromium/TestExpectations:
* platform/efl/TestExpectations:
* platform/gtk/TestExpectations:
* platform/qt/TestExpectations:
* platform/win/Skipped:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@128081 268f45cc-cd09-0410-ab3c-d52691b4dbfc