Reland of Add framerate to VideoSinkWants and ability to signal on overuse (patchset #1 id:1 of https://codereview.webrtc.org/2783183003/ )

Reason for revert:
Seem to be a flaky test rather than an issue with this cl. Creating reland, will add code to reduce flakiness to that test.

Original issue's description:
> Revert of Add framerate to VideoSinkWants and ability to signal on overuse (patchset #8 id:410001 of https://codereview.webrtc.org/2781433002/ )
>
> Reason for revert:
> This has resulted in failure of CallPerfTest.ReceivesCpuOveruseAndUnderuse test on the Win7 build bot https://build.chromium.org/p/client.webrtc.perf/builders/Win7/builds/1780
>
> Original issue's description:
> > Reland of Add framerate to VideoSinkWants and ability to signal on overuse (patchset #1 id:1 of https://codereview.webrtc.org/2764133002/ )
> >
> > Reason for revert:
> > Found issue with test case, will add fix to reland cl.
> >
> > Original issue's description:
> > > Revert of Add framerate to VideoSinkWants and ability to signal on overuse (patchset #14 id:250001 of https://codereview.webrtc.org/2716643002/ )
> > >
> > > Reason for revert:
> > > Breaks perf tests:
> > > https://build.chromium.org/p/client.webrtc.perf/builders/Win7/builds/1679
> > > https://build.chromium.org/p/client.webrtc.perf/builders/Android32%20Tests%20%28L%20Nexus5%29/builds/2325
> > >
> > > Original issue's description:
> > > > Add framerate to VideoSinkWants and ability to signal on overuse
> > > >
> > > > In ViEEncoder, try to reduce framerate instead of resolution if the
> > > > current degradation preference is maintain-resolution rather than
> > > > balanced.
> > > >
> > > > BUG=webrtc:4172
> > > >
> > > > Review-Url: https://codereview.webrtc.org/2716643002
> > > > Cr-Commit-Position: refs/heads/master@{#17327}
> > > > Committed: https://chromium.googlesource.com/external/webrtc/+/72acf2526177bb4dbb5103cd6e165eb4361a5ae6
> > >
> > > TBR=nisse@webrtc.org,magjed@webrtc.org,kthelgason@webrtc.org,ilnik@webrtc.org,stefan@webrtc.org,sprang@webrtc.org
> > > # Skipping CQ checks because original CL landed less than 1 days ago.
> > > NOPRESUBMIT=true
> > > NOTREECHECKS=true
> > > NOTRY=true
> > > BUG=webrtc:4172
> > >
> > > Review-Url: https://codereview.webrtc.org/2764133002
> > > Cr-Commit-Position: refs/heads/master@{#17331}
> > > Committed: https://chromium.googlesource.com/external/webrtc/+/8b45b11144c968b4173215c76f78c710c9a2ed0b
> >
> > TBR=nisse@webrtc.org,magjed@webrtc.org,kthelgason@webrtc.org,ilnik@webrtc.org,stefan@webrtc.org,skvlad@webrtc.org
> > # Not skipping CQ checks because original CL landed more than 1 days ago.
> > BUG=webrtc:4172
> >
> > Review-Url: https://codereview.webrtc.org/2781433002
> > Cr-Commit-Position: refs/heads/master@{#17474}
> > Committed: https://chromium.googlesource.com/external/webrtc/+/3ea3c77e93121b1ab9d5e46641e6764f2cca0d51
>
> TBR=ilnik@webrtc.org,stefan@webrtc.org,asapersson@webrtc.org,sprang@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:4172
>
> Review-Url: https://codereview.webrtc.org/2783183003
> Cr-Commit-Position: refs/heads/master@{#17477}
> Committed: https://chromium.googlesource.com/external/webrtc/+/f9ed235c9b7248694edcb46feb1f29ce7456ab59

R=ilnik@webrtc.org,stefan@webrtc.org
BUG=webrtc:4172

Review-Url: https://codereview.webrtc.org/2789823002
Cr-Commit-Position: refs/heads/master@{#17498}
diff --git a/webrtc/test/vcm_capturer.cc b/webrtc/test/vcm_capturer.cc
index 535e9bf..d66cf23 100644
--- a/webrtc/test/vcm_capturer.cc
+++ b/webrtc/test/vcm_capturer.cc
@@ -10,17 +10,18 @@
 
 #include "webrtc/test/vcm_capturer.h"
 
+#include "webrtc/base/logging.h"
 #include "webrtc/modules/video_capture/video_capture_factory.h"
 #include "webrtc/video_send_stream.h"
 
 namespace webrtc {
 namespace test {
 
-VcmCapturer::VcmCapturer() : started_(false), sink_(nullptr), vcm_(NULL) {}
+VcmCapturer::VcmCapturer() : started_(false), sink_(nullptr), vcm_(nullptr) {}
 
 bool VcmCapturer::Init(size_t width, size_t height, size_t target_fps) {
-  VideoCaptureModule::DeviceInfo* device_info =
-      VideoCaptureFactory::CreateDeviceInfo();
+  std::unique_ptr<VideoCaptureModule::DeviceInfo> device_info(
+      VideoCaptureFactory::CreateDeviceInfo());
 
   char device_name[256];
   char unique_name[256];
@@ -35,7 +36,6 @@
   vcm_->RegisterCaptureDataCallback(this);
 
   device_info->GetCapability(vcm_->CurrentDeviceName(), 0, capability_);
-  delete device_info;
 
   capability_.width = static_cast<int32_t>(width);
   capability_.height = static_cast<int32_t>(height);
@@ -47,7 +47,7 @@
     return false;
   }
 
-  assert(vcm_->CaptureStarted());
+  RTC_CHECK(vcm_->CaptureStarted());
 
   return true;
 }
@@ -55,13 +55,13 @@
 VcmCapturer* VcmCapturer::Create(size_t width,
                                  size_t height,
                                  size_t target_fps) {
-  VcmCapturer* vcm_capturer = new VcmCapturer();
+  std::unique_ptr<VcmCapturer> vcm_capturer(new VcmCapturer());
   if (!vcm_capturer->Init(width, height, target_fps)) {
-    // TODO(pbos): Log a warning that this failed.
-    delete vcm_capturer;
-    return NULL;
+    LOG(LS_WARNING) << "Failed to create VcmCapturer(w = " << width
+                    << ", h = " << height << ", fps = " << target_fps << ")";
+    return nullptr;
   }
-  return vcm_capturer;
+  return vcm_capturer.release();
 }
 
 
@@ -80,6 +80,7 @@
   rtc::CritScope lock(&crit_);
   RTC_CHECK(!sink_ || sink_ == sink);
   sink_ = sink;
+  VideoCapturer::AddOrUpdateSink(sink, wants);
 }
 
 void VcmCapturer::RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) {
@@ -102,8 +103,11 @@
 
 void VcmCapturer::OnFrame(const VideoFrame& frame) {
   rtc::CritScope lock(&crit_);
-  if (started_ && sink_)
-    sink_->OnFrame(frame);
+  if (started_ && sink_) {
+    rtc::Optional<VideoFrame> out_frame = AdaptFrame(frame);
+    if (out_frame)
+      sink_->OnFrame(*out_frame);
+  }
 }
 
 }  // test