Add some more EXPECT_TRUE to track down the valgrind issue.
Add some more EXPECT_TRUE to track down the valgrind issue.

BUG=39401
TEST=ui_test --gtest_filter BookmarksUITest.*
TBR=dhollowa

Review URL: http://codereview.chromium.org/1365003

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@42707 0039d316-1c4b-4281-b951-d872f2087c98

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