Simplify CaptureRenderAdapter.

talk/media/base/capturemanager.cc

Index: talk/media/base/capturemanager.cc
diff --git a/talk/media/base/capturemanager.cc b/talk/media/base/capturemanager.cc
index b7cbbf22ce1633fea5a14febf1102d16a21b982f..dab33fd2bc73d4996cbb93c8e5e0eaa30f48b461 100644
--- a/talk/media/base/capturemanager.cc
+++ b/talk/media/base/capturemanager.cc
@@ -297,7 +297,8 @@ bool CaptureManager::AddVideoRenderer(VideoCapturer* video_capturer,
   if (!adapter) {
     return false;
   }
-  return adapter->AddRenderer(video_renderer);
+  adapter->AddRenderer(video_renderer);
+  return true;
 }
 
 bool CaptureManager::RemoveVideoRenderer(VideoCapturer* video_capturer,
@@ -310,7 +311,8 @@ bool CaptureManager::RemoveVideoRenderer(VideoCapturer* video_capturer,
   if (!adapter) {
     return false;
   }
-  return adapter->RemoveRenderer(video_renderer);
+  adapter->RemoveRenderer(video_renderer);
+  return true;
 }
 
 bool CaptureManager::IsCapturerRegistered(VideoCapturer* video_capturer) const {