Enable webkit_compositor_bindings_unittests in component builds

cc/test/test_webkit_platform.cc

+// Copyright (c) 2012 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 "cc/test/test_webkit_platform.h"
+
+namespace cc {
+
+TestWebKitPlatform::TestWebKitPlatform() {
+}
+
+TestWebKitPlatform::~TestWebKitPlatform() {
+}
+
+WebKit::WebCompositorSupport* TestWebKitPlatform::compositorSupport() {
+  return &compositor_support_;
+}
+
+void TestWebKitPlatform::cryptographicallyRandomValues(
+      unsigned char* buffer, size_t length) {
+  base::RandBytes(buffer, length);
+}
+
+WebKit::WebThread* TestWebKitPlatform::createThread(const char* name) {
+  return new webkit_glue::WebThreadImpl(name);
+}
+
+WebKit::WebThread* TestWebKitPlatform::currentThread() {
+  webkit_glue::WebThreadImplForMessageLoop* thread =
+      static_cast<WebThreadImplForMessageLoop*>(current_thread_slot_.Get());
+  if (thread)
+    return (thread);
+
+  scoped_refptr<base::MessageLoopProxy> message_loop =
+      base::MessageLoopProxy::current();
+  if (!message_loop)
+    return NULL;
+
+  thread = new WebThreadImplForMessageLoop(message_loop);
+  current_thread_slot_.Set(thread);
+  return thread;
+}
+
+double TestWebKitPlatform::currentTime() {
+  return base::Time::Now().ToDoubleT();
+}
+
+double TestWebKitPlatform::monotonicallyIncreasingTime() {
+  return base::TimeTicks::Now().ToInternalValue() /
+      static_cast<double>(base::Time::kMicrosecondsPerSecond);
+}
+
+}