Move the rest of the renderer->browser messages that belong in content. Also do a bunch of cleanup:

chrome/common/devtools_messages.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Developer tools consist of the following parts:
 //
 // DevToolsAgent lives in the renderer of an inspected page and provides access
 // to the pages resources, DOM, v8 etc. by means of IPC messages.
 //
 // DevToolsClient is a thin delegate that lives in the tools front-end
@@ skipping 26 matching lines @@
 //                          -----------------------------------
 //
 // This file describes developer tools message types.
 
 // Multiply-included message file, no standard include guard.
 #include <map>
 #include <string>
 
 #include "ipc/ipc_message_macros.h"
 
-// Singly-included section not yet converted.
+// Singly-included section.
 #ifndef CHROME_COMMON_DEVTOOLS_MESSAGES_H_
 #define CHROME_COMMON_DEVTOOLS_MESSAGES_H_
 
 typedef std::map<std::string, std::string> DevToolsRuntimeProperties;
 
 #endif  // CHROME_COMMON_DEVTOOLS_MESSAGES_H_
 
 #define IPC_MESSAGE_START DevToolsMsgStart
 
 // These are messages sent from DevToolsAgent to DevToolsClient through the
@@ skipping 35 matching lines @@
 IPC_MESSAGE_CONTROL1(DevToolsAgentMsg_DebuggerCommand,
                      std::string  /* command */)
 
 // Inspect element with the given coordinates.
 IPC_MESSAGE_CONTROL2(DevToolsAgentMsg_InspectElement,
                      int /* x */,
                      int /* y */)
 
 // Enables/disables the apu agent.
 IPC_MESSAGE_CONTROL1(DevToolsAgentMsg_SetApuAgentEnabled, bool /* enabled */)
-