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

content/renderer/devtools_agent.h

Index: content/renderer/devtools_agent.h
===================================================================
--- content/renderer/devtools_agent.h	(revision 163045)
+++ content/renderer/devtools_agent.h	(working copy)
@@ -12,17 +12,18 @@
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDevToolsAgentClient.h"
 
-class RenderViewImpl;
-
 namespace WebKit {
 class WebDevToolsAgent;
 }
 
+namespace content {
+class RenderViewImpl;
+
 // DevToolsAgent belongs to the inspectable RenderView and provides Glue's
 // agents with the communication capabilities. All messages from/to Glue's
 // agents infrastructure are flowing through this communication agent.
 // There is a corresponding DevToolsClient object on the client side.
-class DevToolsAgent : public content::RenderViewObserver,
+class DevToolsAgent : public RenderViewObserver,
                       public WebKit::WebDevToolsAgentClient {
  public:
   explicit DevToolsAgent(RenderViewImpl* render_view);
@@ -57,7 +58,7 @@
   void OnDetach();
   void OnDispatchOnInspectorBackend(const std::string& message);
   void OnInspectElement(int x, int y);
-  void OnAddMessageToConsole(content::ConsoleMessageLevel level,
+  void OnAddMessageToConsole(ConsoleMessageLevel level,
                              const std::string& message);
   void ContinueProgram();
   void OnSetupDevToolsClient();
@@ -67,4 +68,6 @@
   DISALLOW_COPY_AND_ASSIGN(DevToolsAgent);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_RENDERER_DEVTOOLS_AGENT_H_