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

content/browser/ppapi_plugin_process_host.h

Index: content/browser/ppapi_plugin_process_host.h
===================================================================
--- content/browser/ppapi_plugin_process_host.h	(revision 118420)
+++ content/browser/ppapi_plugin_process_host.h	(working copy)
@@ -12,9 +12,13 @@
 #include "base/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/ref_counted.h"
-#include "content/browser/browser_child_process_host.h"
 #include "content/browser/renderer_host/pepper_message_filter.h"
+#include "content/public/browser/browser_child_process_host_delegate.h"
+#include "content/public/browser/browser_child_process_host_iterator.h"
+#include "ipc/ipc_message.h"
 
+class BrowserChildProcessHost;
+
 namespace content {
 struct PepperPluginInfo;
 class ResourceContext;
@@ -26,8 +30,8 @@
 
 // Process host for PPAPI plugin and broker processes.
 // When used for the broker, interpret all references to "plugin" with "broker".
-class PpapiPluginProcessHost
-    : public BrowserChildProcessHost {
+class PpapiPluginProcessHost : public content::BrowserChildProcessHostDelegate,
+                               public IPC::Message::Sender {
  public:
   class Client {
    public:
@@ -60,6 +64,9 @@
   static PpapiPluginProcessHost* CreateBrokerHost(
       const content::PepperPluginInfo& info);
 
+  // IPC::Message::Sender implementation:
+  virtual bool Send(IPC::Message* message) OVERRIDE;
+
   // Opens a new channel to the plugin. The client will be notified when the
   // channel is ready or if there's an error.
   void OpenChannelToPlugin(Client* client);
@@ -115,8 +122,28 @@
   // The unique id created for the process.
   int process_id_;
 
+  scoped_ptr<BrowserChildProcessHost> process_;
+
   DISALLOW_COPY_AND_ASSIGN(PpapiPluginProcessHost);
 };
 
+class PpapiPluginProcessHostIterator
+    : public content::BrowserChildProcessHostTypeIterator<
+          PpapiPluginProcessHost> {
+ public:
+  PpapiPluginProcessHostIterator()
+      : content::BrowserChildProcessHostTypeIterator<
+          PpapiPluginProcessHost>(content::PROCESS_TYPE_PPAPI_PLUGIN) {}
+};
+
+class PpapiBrokerProcessHostIterator
+    : public content::BrowserChildProcessHostTypeIterator<
+          PpapiPluginProcessHost> {
+ public:
+  PpapiBrokerProcessHostIterator()
+      : content::BrowserChildProcessHostTypeIterator<
+          PpapiPluginProcessHost>(content::PROCESS_TYPE_PPAPI_BROKER) {}
+};
+
 #endif  // CONTENT_BROWSER_PPAPI_PLUGIN_PROCESS_HOST_H_