Added trace query code and wired tracing through BrowserProxy so tests can run traces.

chrome/common/automation_messages_internal.h

 // Copyright (c) 2011 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.
 
 // Defines the IPC messages used by the automation interface.
 
 #include <string>
 #include <vector>
 
 #include "base/string16.h"
@@ skipping 1458 matching lines @@
 //   None expected
 IPC_MESSAGE_ROUTED1(AutomationMsg_MoveWindow,
                     gfx::Rect /* window position and dimentions */)
 
 // Is the browser in application mode?
 IPC_SYNC_MESSAGE_CONTROL1_2(AutomationMsg_IsBrowserInApplicationMode,
                             int /* browser_handle */,
                             bool /* is_application */,
                             bool /* success */)
 
+// Begin tracing.
+IPC_SYNC_MESSAGE_CONTROL2_1(AutomationMsg_BeginTracing,
+                            std::vector<std::string> /* included_categories */,
+                            std::vector<std::string> /* excluded_categories */,
+                            bool /* success */)
+
+// End tracing (called after BeginTracing).
+IPC_SYNC_MESSAGE_CONTROL0_1(AutomationMsg_EndTracing,
+                            bool /* success */)
+
+// End tracing (called after BeginTracing). Must keep calling until
+// remaining_chunks is 0, because IPC sends fail if the payload is too big.
+IPC_SYNC_MESSAGE_CONTROL0_2(AutomationMsg_GetTracingOutput,
+                            std::string /* json_chunk */,
+                            int /* remaining_chunks */)
+
 // Renderer -> browser messages.
 
 // Sent when the renderer has scheduled a client redirect to occur.
 IPC_MESSAGE_ROUTED2(AutomationMsg_WillPerformClientRedirect,
                     int64 /* frame_id */,
                     double /* # of seconds till redirect will be performed */)
 
 // Sent when the renderer has completed or canceled a client redirect for a
 // particular frame. This message may be sent multiple times for the same
 // redirect.
 IPC_MESSAGE_ROUTED1(AutomationMsg_DidCompleteOrCancelClientRedirect,
                     int64 /* frame_id */)
 
 
 // YOUR NEW MESSAGE MIGHT NOT BELONG HERE.
 // This is the section for renderer -> browser automation messages. If it is
 // an automation <-> browser message, put it above this section.