Remove dead IPC message ChromeViewHostMsg_DidBlockRunningInsecureContent.

chrome/common/render_messages.h

 // Copyright (c) 2012 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.
 
 // Multiply-included file, no traditional include guard.
 #include <stdint.h>
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 556 matching lines @@
 
 // Message sent from the renderer to the browser to notify it of a
 // window.print() call which should cancel the prerender. The message is sent
 // only when the renderer is prerendering.
 IPC_MESSAGE_ROUTED0(ChromeViewHostMsg_CancelPrerenderForPrinting)
 
 // Sent when the renderer was prevented from displaying insecure content in
 // a secure page by a security policy.  The page may appear incomplete.
 IPC_MESSAGE_ROUTED0(ChromeViewHostMsg_DidBlockDisplayingInsecureContent)
 
-// Sent when the renderer was prevented from running insecure content in
-// a secure origin by a security policy.  The page may appear incomplete.
-IPC_MESSAGE_ROUTED0(ChromeViewHostMsg_DidBlockRunningInsecureContent)
-
 IPC_MESSAGE_ROUTED1(ChromeViewHostMsg_DidGetWebApplicationInfo,
                     WebApplicationInfo)
 
 #if defined(OS_ANDROID)
 IPC_MESSAGE_ROUTED4(ChromeViewHostMsg_DidRetrieveMetaTagContent,
                     bool /* success */,
                     std::string /* tag_name */,
                     std::string /* tag_content */,
                     GURL /* expected_url */)
 #endif  // defined(OS_ANDROID)
@@ skipping 79 matching lines @@
 
 #if defined(ENABLE_PLUGINS)
 // Sent by the renderer to check if crash reporting is enabled.
 IPC_SYNC_MESSAGE_CONTROL0_1(ChromeViewHostMsg_IsCrashReportingEnabled,
                             bool /* enabled */)
 #endif
 
 // Sent by the renderer to indicate that a fields trial has been activated.
 IPC_MESSAGE_CONTROL1(ChromeViewHostMsg_FieldTrialActivated,
                      std::string /* name */)