RELEASE_ASSERT -> CHECK and ASSERT -> DCHECK in web.

third_party/WebKit/Source/web/WebMediaDevicesRequest.cpp

Index: third_party/WebKit/Source/web/WebMediaDevicesRequest.cpp
diff --git a/third_party/WebKit/Source/web/WebMediaDevicesRequest.cpp b/third_party/WebKit/Source/web/WebMediaDevicesRequest.cpp
index a20f58155dca9a3fdc35d3480fbf6faf4d4755cd..51102704ad98de38acea0bfac114c426251d5cff 100644
--- a/third_party/WebKit/Source/web/WebMediaDevicesRequest.cpp
+++ b/third_party/WebKit/Source/web/WebMediaDevicesRequest.cpp
@@ -49,19 +49,20 @@ void WebMediaDevicesRequest::reset()
 
 WebSecurityOrigin WebMediaDevicesRequest::getSecurityOrigin() const
 {
-    ASSERT(!isNull() && m_private->getExecutionContext());
+    DCHECK(!isNull());
+    DCHECK(m_private->getExecutionContext());
     return WebSecurityOrigin(m_private->getExecutionContext()->getSecurityOrigin());
 }
 
 WebDocument WebMediaDevicesRequest::ownerDocument() const
 {
-    ASSERT(!isNull());
+    DCHECK(!isNull());
     return WebDocument(m_private->ownerDocument());
 }
 
 void WebMediaDevicesRequest::requestSucceeded(WebVector<WebMediaDeviceInfo> webDevices)
 {
-    ASSERT(!isNull());
+    DCHECK(!isNull());
 
     MediaDeviceInfoVector devices(webDevices.size());
     for (size_t i = 0; i < webDevices.size(); ++i)