ScreenshotTakerTest::TakeScreenshot test leaks

Adds additional suppressions for leak in TiledLayer::Update,
started at the same time as leaks in ScreenshotTakerTest, so
am marking this against the same CL/Bug.

BUG=227271
TEST=ScreenshotTakerTest::TakeScreenshot
TBR=sschmitz@chromium.org

Review URL: https://codereview.chromium.org/13710003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@192692 0039d316-1c4b-4281-b951-d872f2087c98

tools/heapcheck/suppressions.txt

@@ -1829,6 +1829,29 @@
    fun:ScreenshotTaker::HandleTakePartialScreenshot
    fun:ash::test::ScreenshotTakerTest_TakeScreenshot_Test::TestBody
 }
+{
+   bug_227271c
+   Heapcheck:Leak
+   ...
+   fun:gfx::internal::ImageSkiaStorage::FindRepresentation
+   fun:gfx::ImageSkia::GetRepresentation
+   fun:gfx::Canvas::GetImageRepToPaint
+   fun:gfx::Canvas::GetImageRepToPaint
+   fun:gfx::Canvas::DrawImageInt
+   fun:gfx::Canvas::DrawImageInt
+   fun:views::ImageView::OnPaint
+   fun:views::View::PaintCommon
+   fun:views::View::Paint
+   fun:views::View::PaintChildren
+   fun:views::View::PaintCommon
+   fun:views::View::OnPaintLayer
+   fun:ui::Layer::PaintContents
+   fun:cc::ContentLayerPainter::Paint
+   fun:cc::ContentLayerUpdater::PaintContents
+   fun:cc::BitmapContentLayerUpdater::PrepareToUpdate
+   fun:cc::TiledLayer::UpdateTileTextures
+   fun:cc::TiledLayer::UpdateTiles
+}
 {
    bug_227301a
    Heapcheck:Leak