Add a Content API around BrowserChildProcessHost, similar to what was done with ChildProcessHost....

content/browser/plugin_process_host_mac.cc

 // 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.
 
 #include <Carbon/Carbon.h>
 
 #include "build/build_config.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
+#include "base/process_util.h"
+#include "content/browser/browser_child_process_host.h"
 #include "content/browser/plugin_process_host.h"
 #include "content/common/plugin_messages.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/child_process_data.h"
 #include "ui/gfx/rect.h"
 
 using content::BrowserThread;
 
 void PluginProcessHost::OnPluginSelectWindow(uint32 window_id,
                                              gfx::Rect window_rect,
                                              bool modal) {
   plugin_visible_windows_set_.insert(window_id);
   if (modal)
     plugin_modal_windows_set_.insert(window_id);
@@ skipping 41 matching lines @@
                                            gfx::Rect window_rect) {
   bool had_windows = !plugin_visible_windows_set_.empty();
   plugin_visible_windows_set_.erase(window_id);
   bool browser_needs_activation = had_windows &&
       plugin_visible_windows_set_.empty();
 
   plugin_modal_windows_set_.erase(window_id);
   if (plugin_fullscreen_windows_set_.find(window_id) !=
       plugin_fullscreen_windows_set_.end()) {
     plugin_fullscreen_windows_set_.erase(window_id);
-    pid_t plugin_pid = browser_needs_activation ? -1 : data().handle;
+    pid_t plugin_pid =
+        browser_needs_activation ? -1 : process_->GetData().handle;
     browser_needs_activation = false;
     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                             base::Bind(ReleasePluginFullScreen, plugin_pid));
   }
 
   if (browser_needs_activation) {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::Bind(base::mac::ActivateProcess, base::GetCurrentProcId()));
   }
 }
 
 void PluginProcessHost::OnAppActivation() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // If our plugin process has any modal windows up, we need to bring it forward
   // so that they act more like an in-process modal window would.
   if (!plugin_modal_windows_set_.empty()) {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
-        base::Bind(base::mac::ActivateProcess, data().handle));
+        base::Bind(base::mac::ActivateProcess, process_->GetData().handle));
   }
 }
 
 void PluginProcessHost::OnPluginSetCursorVisibility(bool visible) {
   if (plugin_cursor_visible_ != visible) {
     plugin_cursor_visible_ = visible;
     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                             base::Bind(base::mac::SetCursorVisibility,
                                        visible));
   }
 }