WebKit MediaStream cleanup: ASSERT-->DCHECK and ASSERT_NOT_REACHED-->NOTREACHED etc

third_party/WebKit/Source/modules/mediastream/MediaStreamRegistry.cpp

Index: third_party/WebKit/Source/modules/mediastream/MediaStreamRegistry.cpp
diff --git a/third_party/WebKit/Source/modules/mediastream/MediaStreamRegistry.cpp b/third_party/WebKit/Source/modules/mediastream/MediaStreamRegistry.cpp
index a1f6580732f68121922be7e60cc273df9627c82e..f90f9a94179c335b585344f047c3e3cb15ad6a8c 100644
--- a/third_party/WebKit/Source/modules/mediastream/MediaStreamRegistry.cpp
+++ b/third_party/WebKit/Source/modules/mediastream/MediaStreamRegistry.cpp
@@ -33,33 +33,33 @@ namespace blink {
 MediaStreamRegistry& MediaStreamRegistry::registry()
 {
     // Since WebWorkers cannot obtain MediaStream objects, we should be on the main thread.
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     DEFINE_STATIC_LOCAL(MediaStreamRegistry, instance, ());
     return instance;
 }
 
 void MediaStreamRegistry::registerURL(SecurityOrigin*, const KURL& url, URLRegistrable* stream)
 {
-    ASSERT(&stream->registry() == this);
-    ASSERT(isMainThread());
+    DCHECK(&stream->registry() == this);
+    DCHECK(isMainThread());
     m_streamDescriptors.set(url.getString(), static_cast<MediaStream*>(stream)->descriptor());
 }
 
 void MediaStreamRegistry::unregisterURL(const KURL& url)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     m_streamDescriptors.remove(url.getString());
 }
 
 bool MediaStreamRegistry::contains(const String& url)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     return m_streamDescriptors.contains(url);
 }
 
 MediaStreamDescriptor* MediaStreamRegistry::lookupMediaStreamDescriptor(const String& url)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     return m_streamDescriptors.get(url);
 }