Navigation transitions: Place transition page in same process as destination page.

content/browser/transition_request_manager.cc

Index: content/browser/transition_request_manager.cc
diff --git a/content/browser/transition_request_manager.cc b/content/browser/transition_request_manager.cc
index ab651fed5511c1bd461fd06db8be13115107433e..eaf21ca3edad5c08002472e24bc1723bf453f02c 100644
--- a/content/browser/transition_request_manager.cc
+++ b/content/browser/transition_request_manager.cc
@@ -5,7 +5,11 @@
 #include "content/browser/transition_request_manager.h"
 
 #include "base/memory/singleton.h"
+#include "base/strings/stringprintf.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/common/child_process_host.h"
+#include "content/public/common/url_constants.h"
+#include "url/gurl.h"
 
 namespace content {
 
@@ -33,7 +37,36 @@ void TransitionRequestManager::SetHasPendingTransitionRequest(
   }
 }
 
-TransitionRequestManager::TransitionRequestManager() {
+void TransitionRequestManager::AddPendingTransitionProcessID(const GURL& token,
+                                                             int process_id) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  transition_process_ids_[token.spec()] = process_id;
+}
+
+void TransitionRequestManager::ClearPendingTransitionProcessID(
+    const GURL& token) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  transition_process_ids_.erase(token.spec());
+}
+
+int TransitionRequestManager::GetPendingTransitionProcessIDByToken(
+    const GURL& token) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  ProcessIDMap::iterator it = transition_process_ids_.find(token.spec());
+  if (it == transition_process_ids_.end())
+    return content::ChildProcessHost::kInvalidUniqueID;
+  return it->second;
+}
+
+GURL TransitionRequestManager::CreateTransitionURL() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  transition_unique_ids_++;
+  return GURL(base::StringPrintf(
+      "%s:%x", kNavigationTransitionScheme, transition_unique_ids_));
+}
+
+TransitionRequestManager::TransitionRequestManager()
+    : transition_unique_ids_(0) {
 }
 
 TransitionRequestManager::~TransitionRequestManager() {