[Command buffer] Enable primitive restart for WebGL 2

ui/gl/gl_bindings_autogen_gl.cc

Index: ui/gl/gl_bindings_autogen_gl.cc
diff --git a/ui/gl/gl_bindings_autogen_gl.cc b/ui/gl/gl_bindings_autogen_gl.cc
index 63c1f234a76455a03904f04d7d0ed77a7eb1f720..c768ae75e3503a780d47602dfa97e4400aadad5f 100644
--- a/ui/gl/gl_bindings_autogen_gl.cc
+++ b/ui/gl/gl_bindings_autogen_gl.cc
@@ -311,6 +311,7 @@ void DriverGL::InitializeStaticBindings() {
   fn.glPolygonOffsetFn = reinterpret_cast<glPolygonOffsetProc>(
       GetGLProcAddress("glPolygonOffset"));
   fn.glPopGroupMarkerEXTFn = 0;
+  fn.glPrimitiveRestartIndexFn = 0;
   fn.glProgramBinaryFn = 0;
   fn.glProgramParameteriFn = 0;
   fn.glProgramPathFragmentInputGenNVFn = 0;
@@ -1634,6 +1635,13 @@ void DriverGL::InitializeDynamicBindings(GLContext* context) {
         GetGLProcAddress("glPopGroupMarkerEXT"));
   }
 
+  debug_fn.glPrimitiveRestartIndexFn = 0;
+  if (ver->IsAtLeastGL(3u, 1u)) {
+    fn.glPrimitiveRestartIndexFn =
+        reinterpret_cast<glPrimitiveRestartIndexProc>(
+            GetGLProcAddress("glPrimitiveRestartIndex"));
+  }
+
   debug_fn.glProgramBinaryFn = 0;
   if (ver->IsAtLeastGL(4u, 1u) || ver->IsAtLeastGLES(3u, 0u) ||
       ext.b_GL_ARB_get_program_binary) {
@@ -4273,6 +4281,13 @@ static void GL_BINDING_CALL Debug_glPopGroupMarkerEXT(void) {
   g_driver_gl.debug_fn.glPopGroupMarkerEXTFn();
 }
 
+static void GL_BINDING_CALL Debug_glPrimitiveRestartIndex(GLuint index) {
+  GL_SERVICE_LOG("glPrimitiveRestartIndex"
+                 << "(" << index << ")");
+  DCHECK(g_driver_gl.debug_fn.glPrimitiveRestartIndexFn != nullptr);
+  g_driver_gl.debug_fn.glPrimitiveRestartIndexFn(index);
+}
+
 static void GL_BINDING_CALL Debug_glProgramBinary(GLuint program,
                                                   GLenum binaryFormat,
                                                   const GLvoid* binary,
@@ -6349,6 +6364,10 @@ void DriverGL::InitializeDebugBindings() {
     debug_fn.glPopGroupMarkerEXTFn = fn.glPopGroupMarkerEXTFn;
     fn.glPopGroupMarkerEXTFn = Debug_glPopGroupMarkerEXT;
   }
+  if (!debug_fn.glPrimitiveRestartIndexFn) {
+    debug_fn.glPrimitiveRestartIndexFn = fn.glPrimitiveRestartIndexFn;
+    fn.glPrimitiveRestartIndexFn = Debug_glPrimitiveRestartIndex;
+  }
   if (!debug_fn.glProgramBinaryFn) {
     debug_fn.glProgramBinaryFn = fn.glProgramBinaryFn;
     fn.glProgramBinaryFn = Debug_glProgramBinary;
@@ -7998,6 +8017,10 @@ void GLApiBase::glPopGroupMarkerEXTFn(void) {
   driver_->fn.glPopGroupMarkerEXTFn();
 }
 
+void GLApiBase::glPrimitiveRestartIndexFn(GLuint index) {
+  driver_->fn.glPrimitiveRestartIndexFn(index);
+}
+
 void GLApiBase::glProgramBinaryFn(GLuint program,
                                   GLenum binaryFormat,
                                   const GLvoid* binary,
@@ -10111,6 +10134,11 @@ void TraceGLApi::glPopGroupMarkerEXTFn(void) {
   gl_api_->glPopGroupMarkerEXTFn();
 }
 
+void TraceGLApi::glPrimitiveRestartIndexFn(GLuint index) {
+  TRACE_EVENT_BINARY_EFFICIENT0("gpu", "TraceGLAPI::glPrimitiveRestartIndex")
+  gl_api_->glPrimitiveRestartIndexFn(index);
+}
+
 void TraceGLApi::glProgramBinaryFn(GLuint program,
                                    GLenum binaryFormat,
                                    const GLvoid* binary,
@@ -12576,6 +12604,13 @@ void NoContextGLApi::glPopGroupMarkerEXTFn(void) {
       << "Trying to call glPopGroupMarkerEXT() without current GL context";
 }
 
+void NoContextGLApi::glPrimitiveRestartIndexFn(GLuint index) {
+  NOTREACHED()
+      << "Trying to call glPrimitiveRestartIndex() without current GL context";
+  LOG(ERROR)
+      << "Trying to call glPrimitiveRestartIndex() without current GL context";
+}
+
 void NoContextGLApi::glProgramBinaryFn(GLuint program,
                                        GLenum binaryFormat,
                                        const GLvoid* binary,