Flush gcda (code coverage) files manually in iOS Platform Test.

testing/platform_test_ios.mm

Index: testing/platform_test_ios.mm
diff --git a/testing/platform_test_mac.mm b/testing/platform_test_ios.mm
similarity index 82%
copy from testing/platform_test_mac.mm
copy to testing/platform_test_ios.mm
index bd22cd5b4593828f2bee0d3233e29cf5514f70ff..8d58986a0d81dd817a308cc1ffdfa7708d84c39f 100644
--- a/testing/platform_test_mac.mm
+++ b/testing/platform_test_ios.mm
@@ -6,10 +6,13 @@
 
 #import <Foundation/Foundation.h>
 
+#include "coverage_util_ios.h"
+
 PlatformTest::PlatformTest()
     : pool_([[NSAutoreleasePool alloc] init]) {
 }
 
 PlatformTest::~PlatformTest() {
   [pool_ release];
+  coverage_util::FlushCoverageDataIfNecessary();
 }