export the entire HTMLResourcePreloader class in shared_library builds

export the entire HTMLResourcePreloader class in shared_library builds

After https://codereview.chromium.org/1112833004/ landed, libblink_web.so
fails to link in some configurations, giving this error:

obj/third_party/WebKit/Source/core/html/parser/blink_web.HTMLResourcePreloaderTest.o:HTMLResourcePreloaderTest.cpp:function blink::HTMLResourcePreloaderTest::test(blink::PreconnectTestCase): error: undefined reference to 'vtable for blink::HTMLResourcePreloader'
/usr/bin/ld.gold: the vtable symbol may be undefined because the class is missing its key function

The blink::HTMLResourcePreloader vtable exists in lib/libwebcore_shared.so
but only as a local symbol, because I assume that the HTMLResourcePreloader
class has some un-exported virtual methods in these configuration.  So we
should be able to solve this by exporting the entire HTMLResourcePreloader
class.

Committed: https://crrev.com/8ce38a987baaa4fa4788836b8355808ec7a8e50b
git-svn-id: svn://svn.chromium.org/blink/trunk@199651 bbb929c8-8fbe-4397-9dbb-9b2b20218538

[Mostyn Bramley-Moore, 2015-07-29 08:38:56]

mostynb@opera.com changed reviewers:
+ mkwst@chromium.org, philipj@opera.com, yoav@yoav.ws

[Mostyn Bramley-Moore, 2015-07-29 08:39:29]

I think this fixes the link error that appeared after
https://codereview.chromium.org/1112833004/ landed.

[Yoav Weiss, 2015-07-29 08:44:34]

On 2015/07/29 08:39:29, Mostyn Bramley-Moore wrote:
> I think this fixes the link error that appeared after
> https://codereview.chromium.org/1112833004/ landed.

LGTM assuming this builds on the bots.
Thanks! :)

[Mostyn Bramley-Moore, 2015-07-29 08:49:37]

The CQ bit was checked by mostynb@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2015-07-29 08:50:16]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1266533002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1266533002/1

[Mostyn Bramley-Moore, 2015-07-29 09:05:22]

The CQ bit was unchecked by mostynb@opera.com

[Mostyn Bramley-Moore, 2015-07-29 09:05:25]

The CQ bit was checked by mostynb@opera.com

[commit-bot: I haz the power, 2015-07-29 09:05:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1266533002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1266533002/1

[commit-bot: I haz the power, 2015-07-29 09:52:08]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=199651

[commit-bot: I haz the power, 2015-09-23 11:53:14]

Patchset 1 (id:??) landed as
https://crrev.com/8ce38a987baaa4fa4788836b8355808ec7a8e50b