Flash Embed Rewrite: re-enable tests that were disabled on Mac/Windows.

Looking at the stack from the tests, it's unclear how it was related to
the code it's testing. Re-enabling the tests may help figure out if it
was a temporary issue.

Bug: 879644
Change-Id: I2ea2d95e7f24f71f86e2c147017bb7d01a563323
Reviewed-on: https://chromium-review.googlesource.com/c/1382477
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619408}

chrome/renderer/media/flash_embed_rewrite_unittest.cc

@@ -6,7 +6,6 @@
 
 #include "base/metrics/histogram_samples.h"
 #include "base/test/metrics/histogram_tester.h"
-#include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
@@ -186,16 +185,7 @@ TEST_F(FlashEmbedRewriteTest, YouTubeRewriteEmbedSuccess) {
   EXPECT_EQ(total_count, samples->TotalCount());
 }
 
-// Crashes on Mac/Win only. http://crbug.com/879644
-#if defined(OS_WIN) || defined(OS_MACOSX)
-#define MAYBE_YouTubeRewriteEmbedSuccessRewrite \
-  DISABLED_YouTubeRewriteEmbedSuccessRewrite
-#else
-#define MAYBE_YouTubeRewriteEmbedSuccessRewrite \
-  YouTubeRewriteEmbedSuccessRewrite
-#endif
-
-TEST_F(FlashEmbedRewriteTest, MAYBE_YouTubeRewriteEmbedSuccessRewrite) {
+TEST_F(FlashEmbedRewriteTest, YouTubeRewriteEmbedSuccessRewrite) {
   std::unique_ptr<base::HistogramSamples> samples = GetHistogramSamples();
   auto total_count = 0;
   EXPECT_EQ(total_count, samples->TotalCount());