net: Add namespace net to the remaining files under url_request directory.

chrome/browser/chrome_plugin_browsing_context.cc

Index: chrome/browser/chrome_plugin_browsing_context.cc
diff --git a/chrome/browser/chrome_plugin_browsing_context.cc b/chrome/browser/chrome_plugin_browsing_context.cc
index 3ff47295085e3b05bf151dd05324fbbcd3a22321..a252bbf18b4d1ec312987af03009b4557b71e6b8 100644
--- a/chrome/browser/chrome_plugin_browsing_context.cc
+++ b/chrome/browser/chrome_plugin_browsing_context.cc
@@ -23,17 +23,18 @@ CPBrowsingContextManager::~CPBrowsingContextManager() {
 }
 
 CPBrowsingContext CPBrowsingContextManager::Allocate(
-    URLRequestContext* context) {
+    net::URLRequestContext* context) {
   int32 map_id = map_.Add(context);
   return static_cast<CPBrowsingContext>(map_id);
 }
 
-URLRequestContext* CPBrowsingContextManager::ToURLRequestContext(
+net::URLRequestContext* CPBrowsingContextManager::ToURLRequestContext(
     CPBrowsingContext id) {
   return map_.Lookup(static_cast<int32>(id));
 }
 
-CPBrowsingContext CPBrowsingContextManager::Lookup(URLRequestContext* context) {
+CPBrowsingContext CPBrowsingContextManager::Lookup(
+    net::URLRequestContext* context) {
   ReverseMap::const_iterator it = reverse_map_.find(context);
   if (it == reverse_map_.end()) {
     CPBrowsingContext id = Allocate(context);
@@ -49,7 +50,8 @@ void CPBrowsingContextManager::Observe(NotificationType type,
                                        const NotificationDetails& details) {
   DCHECK(type == NotificationType::URL_REQUEST_CONTEXT_RELEASED);
 
-  URLRequestContext* context = Source<URLRequestContext>(source).ptr();
+  net::URLRequestContext* context =
+      Source<net::URLRequestContext>(source).ptr();
 
   // Multiple CPBrowsingContexts may refer to the same URLRequestContext.
   for (Map::iterator it(&map_); !it.IsAtEnd(); it.Advance()) {