rebaseline after clear change -- pdf was not treating clear as SRC_MODE

expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Debug/expected-results.json

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@@ skipping 6975 matching lines @@
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@@ skipping 703 matching lines @@
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@@ skipping 3396 matching lines @@
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@@ skipping 927 matching lines @@
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@@ skipping 181 matching lines @@
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