[Files.app] Fix the test failure due to r232362

r232362 causes ImageLoaderTest.IsComponentExtensionResource failure. This patch fixes it.

BUG=none
TEST=manually tested
TBR=yoshiki@chromium.org, csharp@chromium.org

Review URL: https://codereview.chromium.org/56133002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232408 0039d316-1c4b-4281-b951-d872f2087c98
Revert 232260 "Roll Clang 192869:193323"

Temporary, until http://crbug.com/314109 is resolved.

> Roll Clang 192869:193323
> 
> BUG=313468, 313823
> 
> Review URL: https://codereview.chromium.org/49983003

TBR=hans@chromium.org

Review URL: https://codereview.chromium.org/55773004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232409 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232409