Enable resize test(down&up) by changing the bitrate.

Change-Id: I5a4f1f7b9de20fbfc28cb743dcd29c0eeca736f8
diff --git a/test/resize_test.cc b/test/resize_test.cc
index 16ca8c4..bc91fe2 100644
--- a/test/resize_test.cc
+++ b/test/resize_test.cc
@@ -407,7 +407,7 @@
   // Disable dropped frames.
   cfg_.rc_dropframe_thresh = 0;
   // Starting bitrate low.
-  cfg_.rc_target_bitrate = 90;
+  cfg_.rc_target_bitrate = 80;
   ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
 
   unsigned int last_w = cfg_.g_w;
@@ -431,10 +431,8 @@
     }
   }
 
-  // Verify that we get at least 1 resize event in this test.
-  // TODO(marpan): We should be able to force 2 resize events
-  // with some change in encoder settings/bitrate.
-  ASSERT_GE(resize_count, 1) << "Resizing should occur at least once.";
+  // Verify that we get 2 resize events in this test.
+  ASSERT_EQ(resize_count, 2) << "Resizing should occur twice.";
 }
 
 vpx_img_fmt_t CspForFrameNumber(int frame) {