Added disabling EGL extensions support with --disable-extensions.

ui/gl/egl_api_unittest.cc

+// Copyright 2015 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 "base/command_line.h"
+#include "base/memory/scoped_ptr.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gl/gl_egl_api_implementation.h"
+#include "ui/gl/gl_implementation.h"
+#include "ui/gl/gl_switches.h"
+
+namespace gfx {
+
+class EGLApiTest : public testing::Test {
+ public:
+  void SetUp() override {
+    fake_extension_string_ = "";
+
+    driver_.reset(new DriverEGL());
+    api_.reset(new RealEGLApi());
+
+    driver_->fn.eglQueryStringFn = &FakeQueryString;
+    driver_->fn.eglGetCurrentDisplayFn = &FakeGetCurrentDisplay;
+  }
+
+  void TearDown() override {
+    api_.reset(nullptr);
+    driver_.reset(nullptr);
+
+    fake_extension_string_ = "";
+  }
+
+  void InitializeAPI(base::CommandLine* command_line) {
+    api_.reset(new RealEGLApi());
+    if (command_line)
+      api_->InitializeWithCommandLine(driver_.get(), command_line);
+    else
+      api_->Initialize(driver_.get());
+    api_->InitializeWithContext();
+  }
+
+  void SetFakeExtensionString(const char* fake_string) {
+    fake_extension_string_ = fake_string;
+  }
+
+  static const char* GL_BINDING_CALL FakeQueryString(EGLDisplay dpy,
+                                                     EGLint name) {
+    return fake_extension_string_;
+  }
+
+  static EGLDisplay GL_BINDING_CALL FakeGetCurrentDisplay() {
+    return nullptr;
+  }
+
+  const char* GetExtensions() {
+    EGLDisplay display = api_->eglGetCurrentDisplayFn();
+    return api_->eglQueryStringFn(display, EGL_EXTENSIONS);
+  }
+
+ protected:
+  static const char* fake_extension_string_;
+
+  scoped_ptr<DriverEGL> driver_;
+  scoped_ptr<RealEGLApi> api_;
+};
+
+const char* EGLApiTest::fake_extension_string_ = "";
+
+TEST_F(EGLApiTest, DisabledExtensionStringTest) {
+  static const char* kFakeExtensions = "EGL_EXT_1 EGL_EXT_2"
+                                       " EGL_EXT_3 EGL_EXT_4";
+  static const char* kFakeDisabledExtensions = "EGL_EXT_1,EGL_EXT_2,EGL_FAKE";
+  static const char* kFilteredExtensions = "EGL_EXT_3 EGL_EXT_4";
+
+  SetFakeExtensionString(kFakeExtensions);
+  InitializeAPI(nullptr);
+
+  EXPECT_STREQ(kFakeExtensions, GetExtensions());
+
+  base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
+  command_line.AppendSwitchASCII(switches::kDisableExtensions,
+                                 kFakeDisabledExtensions);
+  InitializeAPI(&command_line);
+
+  EXPECT_STREQ(kFilteredExtensions, GetExtensions());
+}
+
+}  // namespace gpu

[no sievers, 2015/05/28 19:25:10]

nit: s/gpu/gfx

[David Yen, 2015/06/05 23:59:51]

Done.