Revert 172261

> PPAPI: Convert FileIO tests to new style & test background threads
> 
> BUG=92909
> 
> 
> Review URL: https://chromiumcodereview.appspot.com/11421137

This fails consistently on the Linux debug test bot (see bug 92909 for details).

TBR=dmichael@chromium.org
BUG=92909
Review URL: https://codereview.chromium.org/11458005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@172286 0039d316-1c4b-4281-b951-d872f2087c98

ppapi/tests/test_case.h

@@ -319,10 +319,9 @@ class TestCaseFactory {
 // Helper macros for checking values in tests, and returning a location
 // description of the test fails.
 #define ASSERT_TRUE(cmd) \
-  do { \
-    if (!(cmd)) \
-      return MakeFailureMessage(__FILE__, __LINE__, #cmd); \
-  } while (false)
+  if (!(cmd)) { \
+    return MakeFailureMessage(__FILE__, __LINE__, #cmd); \
+  }
 #define ASSERT_FALSE(cmd) ASSERT_TRUE(!(cmd))
 #define ASSERT_EQ(a, b) ASSERT_TRUE((a) == (b))
 #define ASSERT_NE(a, b) ASSERT_TRUE((a) != (b))