[jumbo] fixup after onion soup screen_orientation_dispatcher improvements

This fixes the following error in jumbo builds:

/../../third_party/WebKit/Source/modules/screen_orientation/ScreenOrientationDelegateTest.cpp:51:46: error: unknown class name 'Test'; did you mean '::testing::Test'?
class ScreenOrientationDelegateTest : public testing::Test {
                                             ^~~~~~~~~~~~~
                                             ::testing::Test

Followup after https://chromium-review.googlesource.com/c/chromium/src/+/848735

TBR=haraken@chromium.org

Bug: 678545
Change-Id: Ide6d0c6c0c7b8f1d45acad9aeca1e7998e5fa94e
Reviewed-on: https://chromium-review.googlesource.com/891959Reviewed-by: Mostyn Bramley-Moore <mostynb@vewd.com>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@vewd.com>
Cr-Commit-Position: refs/heads/master@{#532820}

third_party/WebKit/Source/modules/screen_orientation/ScreenOrientationDelegateTest.cpp

@@ -48,7 +48,7 @@ class MockLockOrientationCallback : public blink::WebLockOrientationCallback {
   LockOrientationResultHolder* results_;
 };
 
-class ScreenOrientationDelegateTest : public testing::Test {
+class ScreenOrientationDelegateTest : public ::testing::Test {
  protected:
   void SetUp() override {
     delegate_.reset(new ScreenOrientationDelegate(nullptr));