Include EXT_window_rectangles API

src/gpu/gl/GrGLAssembleInterface.cpp

Index: src/gpu/gl/GrGLAssembleInterface.cpp
diff --git a/src/gpu/gl/GrGLAssembleInterface.cpp b/src/gpu/gl/GrGLAssembleInterface.cpp
index 539d1ae0bc8e0b7c94c77f9efb4c5e7ec51e51ce..2233005b6a01e63d7d83801ee1fc6f35b54441e2 100644
--- a/src/gpu/gl/GrGLAssembleInterface.cpp
+++ b/src/gpu/gl/GrGLAssembleInterface.cpp
@@ -511,6 +511,10 @@ const GrGLInterface* GrGLAssembleGLInterface(void* ctx, GrGLGetProc get) {
         GET_PROC(ObjectLabel);
     }
 
+    if (extensions.has("GL_EXT_window_rectangles")) {
+        GET_PROC_SUFFIX(WindowRectangles, EXT);
+    }
+
     if (extensions.has("EGL_KHR_image") || extensions.has("EGL_KHR_image_base")) {
         GET_EGL_PROC_SUFFIX(CreateImage, KHR);
         GET_EGL_PROC_SUFFIX(DestroyImage, KHR);
@@ -897,6 +901,10 @@ const GrGLInterface* GrGLAssembleGLESInterface(void* ctx, GrGLGetProc get) {
         GET_PROC_SUFFIX(BindUniformLocation, CHROMIUM);
     }
 
+    if (extensions.has("GL_EXT_window_rectangles")) {
+        GET_PROC_SUFFIX(WindowRectangles, EXT);
+    }
+
     if (extensions.has("EGL_KHR_image") || extensions.has("EGL_KHR_image_base")) {
         GET_EGL_PROC_SUFFIX(CreateImage, KHR);
         GET_EGL_PROC_SUFFIX(DestroyImage, KHR);