cleanup cpplint warnings

Suggested by James Zern to clear out cpplint warnings for all unit
test code.

Change-Id: I731a3fa4d2a257eb9ef733426ba84286fbd7ea34

test/idct8x8_test.cc

diff --git a/test/idct8x8_test.cc b/test/idct8x8_test.cc
index 67db78b..fc8129e 100644
--- a/test/idct8x8_test.cc
+++ b/test/idct8x8_test.cc
@@ -15,10 +15,10 @@
 #include "third_party/googletest/src/include/gtest/gtest.h"
 
 extern "C" {
-#include "vp9_rtcd.h"
+#include "./vp9_rtcd.h"
 }
 
-#include "acm_random.h"
+#include "test/acm_random.h"
 #include "vpx/vpx_integer.h"
 
 using libvpx_test::ACMRandom;
@@ -27,10 +27,10 @@
 
 #ifdef _MSC_VER
 static int round(double x) {
-  if(x < 0)
-    return (int)ceil(x - 0.5);
+  if (x < 0)
+    return static_cast<int>(ceil(x - 0.5));
   else
-    return (int)floor(x + 0.5);
+    return static_cast<int>(floor(x + 0.5));
 }
 #endif