Move a bunch of code in content\renderer to the content namespace.

content/renderer/devtools_client.h

Index: content/renderer/devtools_client.h
===================================================================
--- content/renderer/devtools_client.h	(revision 163007)
+++ content/renderer/devtools_client.h	(working copy)
@@ -12,20 +12,22 @@
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDevToolsFrontendClient.h"
 
-class RenderViewImpl;
-
 namespace WebKit {
 class WebDevToolsFrontend;
 class WebString;
 }
 
+namespace content {
+
+class RenderViewImpl;
+
 // Developer tools UI end of communication channel between the render process of
 // the page being inspected and tools UI renderer process. All messages will
 // go through browser process. On the side of the inspected page there's
 // corresponding DevToolsAgent object.
 // TODO(yurys): now the client is almost empty later it will delegate calls to
 // code in glue
-class DevToolsClient : public content::RenderViewObserver,
+class DevToolsClient : public RenderViewObserver,
                        public WebKit::WebDevToolsFrontendClient {
  public:
   explicit DevToolsClient(RenderViewImpl* render_view);
@@ -59,4 +61,6 @@
   DISALLOW_COPY_AND_ASSIGN(DevToolsClient);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_RENDERER_DEVTOOLS_CLIENT_H_