Initialize user agent name to avoid assertion failures.

Initialize user agent name to avoid assertion failures.

cpp_bound_class_unittest depended on UA initialization by BookmarkletTest.*, and
r157155 moved BookmarkletTes.* to content_browsertest. It caused assertion
failures during loading the blank page.

BUG=none
TEST=none; This fixes existing tests.

[tkent, 2012-09-18 05:21:33]

This fixes assertion failures in test_shell_tests since r157155.


[1075:-1602484928:168608774677:FATAL:user_agent.cc(107)] Check failed:
!user_agent_.empty(). 
Backtrace:
	0   libbase.dylib                       0x04197fdf
base::debug::StackTrace::StackTrace() + 63
	1   libbase.dylib                       0x04197f7b
base::debug::StackTrace::StackTrace() + 43
	2   libbase.dylib                       0x041f3c7c
logging::LogMessage::~LogMessage() + 76
	3   libbase.dylib                       0x041f276b
logging::LogMessage::~LogMessage() + 43
	4   libuser_agent.dylib                 0x0415000f webkit_glue::(anonymous
namespace)::UserAgentState::Get(GURL const&) const + 287
	5   libuser_agent.dylib                 0x0414febe
webkit_glue::GetUserAgent(GURL const&) + 62
	6   libglue.dylib                       0x0d0ac24e
webkit_glue::WebKitPlatformSupportImpl::userAgent(WebKit::WebURL const&) + 78
	7   libwebkit.dylib                     0x04aec9de
WebKit::FrameLoaderClientImpl::userAgent(WebCore::KURL const&) + 334
	8   libwebkit.dylib                     0x06c17ad4
WebCore::FrameLoader::userAgent(WebCore::KURL const&) const + 84
	9   libwebkit.dylib                     0x06c17d9f
WebCore::FrameLoader::applyUserAgent(WebCore::ResourceRequest&) + 79
	10  libwebkit.dylib                     0x06c4c834
WebCore::ResourceLoadNotifier::willSendRequest(WebCore::ResourceLoader*,
WebCore::ResourceRequest&, WebCore::ResourceResponse const&) + 84
	11  libwebkit.dylib                     0x06c58874
WebCore::ResourceLoader::willSendRequest(WebCore::ResourceRequest&,
WebCore::ResourceResponse const&) + 372
	12  libwebkit.dylib                     0x06c34d96
WebCore::MainResourceLoader::willSendRequest(WebCore::ResourceRequest&,
WebCore::ResourceResponse const&) + 1062
	13  libwebkit.dylib                     0x06c36aec
WebCore::MainResourceLoader::loadNow(WebCore::ResourceRequest&) + 412
	14  libwebkit.dylib                     0x06c3717b
WebCore::MainResourceLoader::load(WebCore::ResourceRequest const&,
WebCore::SubstituteData const&) + 779
	15  libwebkit.dylib                     0x06bd87bf
WebCore::DocumentLoader::startLoadingMainResource() + 383
	16  libwebkit.dylib                     0x06c16eec
WebCore::FrameLoader::continueLoadAfterWillSubmitForm() + 204
	17  libwebkit.dylib                     0x06c12a36
WebCore::FrameLoader::continueLoadAfterNavigationPolicy(WebCore::ResourceRequest
const&, WTF::PassRefPtr<WebCore::FormState>, bool) + 1142
	18  libwebkit.dylib                     0x06c12adc
WebCore::FrameLoader::callContinueLoadAfterNavigationPolicy(void*,
WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>, bool) +
124
	19  libwebkit.dylib                     0x06c424ec
WebCore::PolicyCallback::call(bool) + 156
	20  libwebkit.dylib                     0x06c43474
WebCore::PolicyChecker::continueAfterNavigationPolicy(WebCore::PolicyAction) +
724
	21  libwebkit.dylib                     0x04aea97c
WebKit::FrameLoaderClientImpl::dispatchDecidePolicyForNavigationAction(void
(WebCore::PolicyChecker::*)(WebCore::PolicyAction), WebCore::NavigationAction
const&, WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>) +
1420
	22  libwebkit.dylib                     0x06c43127
WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest const&,
WebCore::DocumentLoader*, WTF::PassRefPtr<WebCore::FormState>, void (*)(void*,
WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>, bool),
void*) + 1143
	23  libwebkit.dylib                     0x06c12312
WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*,
WebCore::FrameLoadType, WTF::PassRefPtr<WebCore::FormState>) + 1714
	24  libwebkit.dylib                     0x06c0e522
WebCore::FrameLoader::load(WebCore::DocumentLoader*) + 546
	25  libwebkit.dylib                     0x06c11a15
WebCore::FrameLoader::load(WebCore::ResourceRequest const&,
WebCore::SubstituteData const&, bool) + 581
	26  libwebkit.dylib                     0x06c11792
WebCore::FrameLoader::load(WebCore::ResourceRequest const&, bool) + 162
	27  libwebkit.dylib                     0x04b9e8a6
WebKit::WebFrameImpl::loadRequest(WebKit::WebURLRequest const&) + 294
	28  test_shell_tests                    0x01308422 (anonymous
namespace)::CppBoundClassTest::SetUp() + 434

[tony, 2012-09-18 17:06:58]

LGTM, thanks for fixing!

[commit-bot: I haz the power, 2012-09-18 17:07:06]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/tkent@chromium.org/10938008/1

[commit-bot: I haz the power, 2012-09-18 17:07:07]

Failed to apply patch for webkit/glue/cpp_bound_class_unittest.cc:
While running patch -p1 --forward --force;
patching file webkit/glue/cpp_bound_class_unittest.cc
Hunk #1 FAILED at 27.
Hunk #2 succeeded at 91 (offset 2 lines).
1 out of 2 hunks FAILED -- saving rejects to file
webkit/glue/cpp_bound_class_unittest.cc.rej

[tony, 2012-09-18 17:09:13]

Ah, already landed in https://codereview.chromium.org/10947005/

[tkent, 2012-09-19 00:42:28]

On 2012/09/18 17:09:13, tony wrote:
> Ah, already landed in https://codereview.chromium.org/10947005/

Oh, that's fine.