VideoCaptureImpl cleanup: merge ctor+Init() and DeInit()+dtor.

content/renderer/media/video_capture_impl_manager.cc

Index: content/renderer/media/video_capture_impl_manager.cc
diff --git a/content/renderer/media/video_capture_impl_manager.cc b/content/renderer/media/video_capture_impl_manager.cc
index 1c052d70415517084a8a689cf3e868421d39d8fe..1293df831d4b6ff62e08fe8c524fa9f37a2c412c 100644
--- a/content/renderer/media/video_capture_impl_manager.cc
+++ b/content/renderer/media/video_capture_impl_manager.cc
@@ -48,9 +48,6 @@ VideoCaptureImplManager::~VideoCaptureImplManager() {
   // Forcibly release all video capture resources.
   for (const auto& device : devices_) {
     VideoCaptureImpl* const impl = device.second.second;
-    ChildProcess::current()->io_task_runner()->PostTask(
-        FROM_HERE,
-        base::Bind(&VideoCaptureImpl::DeInit, base::Unretained(impl)));
     ChildProcess::current()->io_task_runner()->DeleteSoon(FROM_HERE, impl);
   }
   devices_.clear();
@@ -63,11 +60,11 @@ base::Closure VideoCaptureImplManager::UseDevice(
   const VideoCaptureDeviceMap::iterator it = devices_.find(id);
   if (it == devices_.end()) {
     impl = CreateVideoCaptureImplForTesting(id, filter_.get());
-    if (!impl)
-      impl = new VideoCaptureImpl(id, filter_.get());
+    if (!impl) {
+      impl = new VideoCaptureImpl(id, filter_.get(),
+                                  ChildProcess::current()->io_task_runner());
+    }
     devices_[id] = std::make_pair(1, impl);
-    ChildProcess::current()->io_task_runner()->PostTask(
-        FROM_HERE, base::Bind(&VideoCaptureImpl::Init, base::Unretained(impl)));
   } else {
     ++it->second.first;
   }
@@ -162,9 +159,6 @@ void VideoCaptureImplManager::UnrefDevice(
   --it->second.first;
   if (!it->second.first) {
     devices_.erase(id);
-    ChildProcess::current()->io_task_runner()->PostTask(
-        FROM_HERE,
-        base::Bind(&VideoCaptureImpl::DeInit, base::Unretained(impl)));
     ChildProcess::current()->io_task_runner()->DeleteSoon(FROM_HERE, impl);
   }
 }