Move Render(View|Widget)Host and associated classes to content namespace.

content/browser/tab_contents/tab_contents_view_win.cc

Index: content/browser/tab_contents/tab_contents_view_win.cc
diff --git a/content/browser/tab_contents/tab_contents_view_win.cc b/content/browser/tab_contents/tab_contents_view_win.cc
index 177449b8bc1f1d802b7f4021d6b5fb6ed95ddf11..dbaf3681e7847da36bbc0054563b9f58fe36c056 100644
--- a/content/browser/tab_contents/tab_contents_view_win.cc
+++ b/content/browser/tab_contents/tab_contents_view_win.cc
@@ -74,7 +74,7 @@ void TabContentsViewWin::CreateView(const gfx::Size& initial_size) {
 }
 
 RenderWidgetHostView* TabContentsViewWin::CreateViewForWidget(
-    RenderWidgetHost* render_widget_host)  {
+    content::RenderWidgetHost* render_widget_host)  {
   if (render_widget_host->GetView()) {
     // During testing, the view will already be set up in most cases to the
     // test view, so we don't want to clobber it with a real one. To verify that
@@ -142,7 +142,7 @@ void TabContentsViewWin::SizeContents(const gfx::Size& size) {
   }
 }
 
-void TabContentsViewWin::RenderViewCreated(RenderViewHost* host) {
+void TabContentsViewWin::RenderViewCreated(content::RenderViewHost* host) {
 }
 
 void TabContentsViewWin::Focus() {