Remove unused IPC message definitions for PPAPI broker

The PPAPI broker code was removed in http://crrev.com/1d71c85
but it left the IPC message definitions around. Remove them.

BUG=1064652

Change-Id: I5336c64a53736ef28749a7570f267eaf490f620d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2485543Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Ken Buchanan <kenrb@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819052}

content/common/frame_messages.h

@@ -534,15 +534,6 @@ IPC_MESSAGE_CONTROL3(FrameHostMsg_DidDeleteOutOfProcessPepperInstance,
                      int32_t /* pp_instance */,
                      bool /* is_external */)
 
-// A renderer sends this to the browser process when it wants to
-// create a ppapi broker.  The browser will create the broker process
-// if necessary, and will return a handle to the channel on success.
-// On error an empty string is returned.
-// The browser will respond with ViewMsg_PpapiBrokerChannelCreated.
-IPC_MESSAGE_CONTROL2(FrameHostMsg_OpenChannelToPpapiBroker,
-                     int /* routing_id */,
-                     base::FilePath /* path */)
-
 // A renderer sends this to the browser process when it throttles or unthrottles
 // a plugin instance for the Plugin Power Saver feature.
 IPC_MESSAGE_CONTROL3(FrameHostMsg_PluginInstanceThrottleStateChange,

content/common/view_messages.h

@@ -97,20 +97,6 @@ IPC_STRUCT_TRAITS_END()
 // started.
 IPC_MESSAGE_ROUTED0(ViewMsg_MoveOrResizeStarted)
 
-#if BUILDFLAG(ENABLE_PLUGINS)
-// Reply to ViewHostMsg_OpenChannelToPpapiBroker
-// Tells the renderer that the channel to the broker has been created.
-IPC_MESSAGE_ROUTED2(ViewMsg_PpapiBrokerChannelCreated,
-                    base::ProcessId /* broker_pid */,
-                    IPC::ChannelHandle /* handle */)
-
-// Reply to ViewHostMsg_RequestPpapiBrokerPermission.
-// Tells the renderer whether permission to access to PPAPI broker was granted
-// or not.
-IPC_MESSAGE_ROUTED1(ViewMsg_PpapiBrokerPermissionResult,
-                    bool /* result */)
-#endif
-
 // -----------------------------------------------------------------------------
 // Messages sent from the renderer to the browser.
 
@@ -122,17 +108,6 @@ IPC_MESSAGE_ROUTED2(ViewHostMsg_ShowWidget,
                     int /* route_id */,
                     gfx::Rect /* initial_rect */)
 
-#if BUILDFLAG(ENABLE_PLUGINS)
-// A renderer sends this to the browser process when it wants to access a PPAPI
-// broker. In contrast to FrameHostMsg_OpenChannelToPpapiBroker, this is called
-// for every connection.
-// The browser will respond with ViewMsg_PpapiBrokerPermissionResult.
-IPC_MESSAGE_ROUTED3(ViewHostMsg_RequestPpapiBrokerPermission,
-                    int /* routing_id */,
-                    GURL /* document_url */,
-                    base::FilePath /* plugin_path */)
-#endif  // BUILDFLAG(ENABLE_PLUGINS)
-
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.