Enable more PPAPI tests.

TEST=this is it
BUG=none
Review URL: http://codereview.chromium.org/3079006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@54166 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/ui/ppapi_uitest.cc

@@ -92,21 +92,11 @@ class PPAPITest : public UITest {
   }
 };
 
-#if defined(OS_MACOSX)
-// TODO(brettw) this fails on Mac for unknown reasons.
-TEST_F(PPAPITest, DISABLED_DeviceContext2D) {
-#else
 TEST_F(PPAPITest, DeviceContext2D) {
-#endif
   RunTest("DeviceContext2D");
 }
 
-#if defined(OS_MACOSX)
-// TODO(brettw) this fails on Mac for unknown reasons.
-TEST_F(PPAPITest, DISABLED_ImageData) {
-#else
 TEST_F(PPAPITest, ImageData) {
-#endif
   RunTest("ImageData");
 }