Fix compilation errors and Mac and some try bots

samples/multi_window/MultiWindow.cpp

@@ -4,13 +4,15 @@
 // found in the LICENSE file.
 //
 
-#include "Matrix.h"
 #include "SampleApplication.h"
-#include "random_utils.h"
-#include "shader_utils.h"
 
-#include <vector>
+#include <cmath>
 #include <algorithm>
+#include <vector>
+
+#include "random_utils.h"
+#include "shader_utils.h"
+#include "Matrix.h"
 
 class MultiWindowSample : public SampleApplication
 {

src/tests/gl_tests/PointSpritesTest.cpp

@@ -8,6 +8,8 @@
 
 #include "test_utils/ANGLETest.h"
 
+#include <cmath>
+
 using namespace angle;
 
 class PointSpritesTest : public ANGLETest

src/tests/perf_tests/PointSprites.cpp

@@ -6,11 +6,12 @@
 // PointSpritesBenchmark:
 //   Performance test for ANGLE point sprites.
 //
+//
+#include "ANGLEPerfTest.h"
 
-#include <sstream>
 #include <iostream>
+#include <sstream>
 
-#include "ANGLEPerfTest.h"
 #include "shader_utils.h"
 #include "random_utils.h"