Revert "Fix Omnibox.CharTypedToRepaintLatency regression with D3DVsync experiment"

cc/scheduler/begin_frame_source_unittest.cc

Index: cc/scheduler/begin_frame_source_unittest.cc
diff --git a/cc/scheduler/begin_frame_source_unittest.cc b/cc/scheduler/begin_frame_source_unittest.cc
index bff0d4682326db84decd0d0510f437bacf91fe06..a4cf4b59268e9b5aa201c6ea9a58ef0adee4ed11 100644
--- a/cc/scheduler/begin_frame_source_unittest.cc
+++ b/cc/scheduler/begin_frame_source_unittest.cc
@@ -15,7 +15,6 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::NiceMock;
-using testing::_;
 
 namespace cc {
 namespace {
@@ -574,29 +573,5 @@ TEST_F(ExternalBeginFrameSourceTest, OnBeginFrameChecksBeginFrameContinuity) {
   source2.OnBeginFrame(args);
 }
 
-// https://crbug.com/730218: Avoid DCHECK crash in
-// ExternalBeginFrameSource::GetMissedBeginFrameArgs.
-TEST_F(ExternalBeginFrameSourceTest, GetMissedBeginFrameArgs) {
-  BeginFrameArgs args = CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 0,
-                                                       2, 10000, 10100, 100);
-  source_->OnBeginFrame(args);
-
-  EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
-  EXPECT_BEGIN_FRAME_USED_MISSED(*obs_, 0, 2, 10000, 10100, 100);
-  source_->AddObserver(obs_.get());
-  source_->RemoveObserver(obs_.get());
-
-  // Out of order frame_time. This might not be valid but still shouldn't
-  // cause a DCHECK in ExternalBeginFrameSource code.
-  args = CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 0, 2, 9999, 10100,
-                                        101);
-  source_->OnBeginFrame(args);
-
-  EXPECT_CALL((*client_), OnNeedsBeginFrames(true)).Times(1);
-  EXPECT_BEGIN_FRAME_SOURCE_PAUSED(*obs_, false);
-  EXPECT_CALL(*obs_, OnBeginFrame(_)).Times(0);
-  source_->AddObserver(obs_.get());
-}
-
 }  // namespace
 }  // namespace cc