Let ViEEncoder handle resolution changes.

webrtc/api/videocapturertracksource_unittest.cc

Index: webrtc/api/videocapturertracksource_unittest.cc
diff --git a/webrtc/api/videocapturertracksource_unittest.cc b/webrtc/api/videocapturertracksource_unittest.cc
index 48133b1736c538928ac9f1f8d79e6f30f7b120fd..d8f4b0c761dc7837e31ce9d7bc39769df77ff449 100644
--- a/webrtc/api/videocapturertracksource_unittest.cc
+++ b/webrtc/api/videocapturertracksource_unittest.cc
@@ -184,7 +184,7 @@ TEST_F(VideoCapturerTrackSourceTest, MandatoryConstraintCif5Fps) {
   ASSERT_TRUE(format != NULL);
   EXPECT_EQ(352, format->width);
   EXPECT_EQ(288, format->height);
-  EXPECT_EQ(30, format->framerate());
+  EXPECT_EQ(5, format->framerate());
 }
 
 // Test that the capture output is 720P if the camera support it and the
@@ -401,7 +401,7 @@ TEST_F(VideoCapturerTrackSourceTest, MixedOptionsAndConstraints) {
   ASSERT_TRUE(format != NULL);
   EXPECT_EQ(352, format->width);
   EXPECT_EQ(288, format->height);
-  EXPECT_EQ(30, format->framerate());
+  EXPECT_EQ(5, format->framerate());
 
   EXPECT_EQ(rtc::Optional<bool>(false), source_->needs_denoising());
 }
@@ -492,5 +492,5 @@ TEST_F(VideoCapturerTrackSourceTest, OptionalSubOneFpsConstraints) {
                  kMaxWaitMs);
   const cricket::VideoFormat* format = capturer_->GetCaptureFormat();
   ASSERT_TRUE(format != NULL);
-  EXPECT_EQ(30, format->framerate());
+  EXPECT_EQ(1, format->framerate());
 }