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

third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp

Index: third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp b/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
index 881f8a6cdca7e919a6e2e4a24d4de3fa5b5a6bd8..5a31bc575bdc6321a33ca2797627a7bab7da0741 100644
--- a/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
+++ b/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
@@ -659,7 +659,7 @@ void FrameLoaderClientImpl::loadURLExternally(const ResourceRequest& request, Na
 {
     if (!m_webFrame->client())
         return;
-    ASSERT(m_webFrame->frame()->document());
+    DCHECK(m_webFrame->frame()->document());
     Fullscreen::fullyExitFullscreen(*m_webFrame->frame()->document());
     m_webFrame->client()->loadURLExternally(
         WrappedResourceRequest(request), static_cast<WebNavigationPolicy>(policy), suggestedName, shouldReplaceCurrentEntry);
@@ -671,7 +671,7 @@ bool FrameLoaderClientImpl::navigateBackForward(int offset) const
     if (!webview->client())
         return false;
 
-    ASSERT(offset);
+    DCHECK(offset);
     if (offset > webview->client()->historyForwardListCount())
         return false;
     if (offset < -webview->client()->historyBackListCount())
@@ -932,7 +932,7 @@ void FrameLoaderClientImpl::didUpdateToUniqueOrigin()
 {
     if (!m_webFrame->client())
         return;
-    ASSERT(m_webFrame->getSecurityOrigin().isUnique());
+    DCHECK(m_webFrame->getSecurityOrigin().isUnique());
     m_webFrame->client()->didUpdateToUniqueOrigin(m_webFrame->getSecurityOrigin().isPotentiallyTrustworthy());
 }