Mojo C++ bindings: switch device/vr mojom target to use STL/WTF types.

third_party/WebKit/Source/modules/vr/VRFrameData.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/vr/VRFrameData.h"
 
 #include "modules/vr/VREyeParameters.h"
 #include "modules/vr/VRPose.h"
 
 #include <cmath>
@@ skipping 29 matching lines @@
   out[9] = ((upTan - downTan) * yScale * 0.5);
   out[10] = (depthNear + depthFar) / (depthNear - depthFar);
   out[11] = -1.0f;
   out[12] = 0.0f;
   out[13] = 0.0f;
   out[14] = (2 * depthFar * depthNear) / (depthNear - depthFar);
   out[15] = 0.0f;
 }
 
 // Create a matrix from a rotation and translation.
-void matrixfromRotationTranslation(DOMFloat32Array* outArray,
-                                   const mojo::WTFArray<float>& rotation,
-                                   const mojo::WTFArray<float>& translation) {
+void matrixfromRotationTranslation(
+    DOMFloat32Array* outArray,
+    const WTF::Optional<WTF::Vector<float>>& rotation,
+    const WTF::Optional<WTF::Vector<float>>& translation) {
   // Quaternion math
-  float x = rotation.is_null() ? 0.0f : rotation[0];
-  float y = rotation.is_null() ? 0.0f : rotation[1];
-  float z = rotation.is_null() ? 0.0f : rotation[2];
-  float w = rotation.is_null() ? 1.0f : rotation[3];
+  float x = !rotation ? 0.0f : rotation.value()[0];
+  float y = !rotation ? 0.0f : rotation.value()[1];
+  float z = !rotation ? 0.0f : rotation.value()[2];
+  float w = !rotation ? 1.0f : rotation.value()[3];
   float x2 = x + x;
   float y2 = y + y;
   float z2 = z + z;
 
   float xx = x * x2;
   float xy = x * y2;
   float xz = x * z2;
   float yy = y * y2;
   float yz = y * z2;
   float zz = z * z2;
   float wx = w * x2;
   float wy = w * y2;
   float wz = w * z2;
 
   float* out = outArray->data();
   out[0] = 1 - (yy + zz);
   out[1] = xy + wz;
   out[2] = xz - wy;
   out[3] = 0;
   out[4] = xy - wz;
   out[5] = 1 - (xx + zz);
   out[6] = yz + wx;
   out[7] = 0;
   out[8] = xz + wy;
   out[9] = yz - wx;
   out[10] = 1 - (xx + yy);
   out[11] = 0;
-  out[12] = translation.is_null() ? 0.0f : translation[0];
-  out[13] = translation.is_null() ? 0.0f : translation[1];
-  out[14] = translation.is_null() ? 0.0f : translation[2];
+  out[12] = !translation ? 0.0f : translation.value()[0];
+  out[13] = !translation ? 0.0f : translation.value()[1];
+  out[14] = !translation ? 0.0f : translation.value()[2];
   out[15] = 1;
 }
 
 // Translate a matrix
 void matrixTranslate(DOMFloat32Array* outArray,
                      const DOMFloat32Array* translation) {
   if (!translation)
     return;
 
   float x = translation->data()[0];
@@ skipping 113 matching lines @@
 
 DEFINE_TRACE(VRFrameData) {
   visitor->trace(m_leftProjectionMatrix);
   visitor->trace(m_leftViewMatrix);
   visitor->trace(m_rightProjectionMatrix);
   visitor->trace(m_rightViewMatrix);
   visitor->trace(m_pose);
 }
 
 }  // namespace blink