Simplify ScreenCapturer interface.

media/video/capture/screen/screen_capturer_mac_unittest.cc

Index: media/video/capture/screen/screen_capturer_mac_unittest.cc
diff --git a/media/video/capture/screen/screen_capturer_mac_unittest.cc b/media/video/capture/screen/screen_capturer_mac_unittest.cc
index 9afd7f282a08e22c30ff88795b9577984e5047b2..a30ac5a7c12659f6ce3380e88a13c6309cda6b14 100644
--- a/media/video/capture/screen/screen_capturer_mac_unittest.cc
+++ b/media/video/capture/screen/screen_capturer_mac_unittest.cc
@@ -35,14 +35,8 @@ class ScreenCapturerMacTest : public testing::Test {
     capturer_ = ScreenCapturer::Create();
   }
 
-  void AddDirtyRect() {
-    SkIRect rect = SkIRect::MakeXYWH(0, 0, 10, 10);
-    region_.op(rect, SkRegion::kUnion_Op);
-  }
-
   scoped_ptr<ScreenCapturer> capturer_;
   MockScreenCapturerDelegate delegate_;
-  SkRegion region_;
 };
 
 void ScreenCapturerMacTest::CaptureDoneCallback1(
@@ -60,7 +54,6 @@ void ScreenCapturerMacTest::CaptureDoneCallback2(
   int width = CGDisplayPixelsWide(mainDevice);
   int height = CGDisplayPixelsHigh(mainDevice);
 
-  EXPECT_EQ(region_, capture_data->dirty_region());
   EXPECT_EQ(width, capture_data->size().width());
   EXPECT_EQ(height, capture_data->size().height());
   EXPECT_TRUE(capture_data->data() != NULL);
@@ -89,10 +82,7 @@ TEST_F(ScreenCapturerMacTest, Capture) {
   capturer_->CaptureFrame();
 
   // Check that subsequent dirty rects are propagated correctly.
-  AddDirtyRect();
-  capturer_->InvalidateRegion(region_);
   capturer_->CaptureFrame();
-  capturer_->Stop();
 }
 
 }  // namespace media