Switch RenderFrameHostManager to use RenderProcessHostObserver, remove NOTIFICATION_RENDERER_PROCES…

content/test/content_browser_test_utils_internal.cc

Index: content/test/content_browser_test_utils_internal.cc
diff --git a/content/test/content_browser_test_utils_internal.cc b/content/test/content_browser_test_utils_internal.cc
index ea1d17ebce72a4954d21d6112dec0270f3acb683..8bbc04b30e6b4b6ed860886ae89a8d55eb5dd574 100644
--- a/content/test/content_browser_test_utils_internal.cc
+++ b/content/test/content_browser_test_utils_internal.cc
@@ -84,10 +84,8 @@ std::string FrameTreeVisualizer::DepictFrameTree(FrameTreeNode* root) {
     }
 
     // Sort the proxies by SiteInstance ID to avoid hash_map ordering.
-    std::map<int, RenderFrameProxyHost*> sorted_proxy_hosts;
-    for (auto& proxy_pair : node->render_manager()->proxy_hosts_) {
-      sorted_proxy_hosts.insert(proxy_pair);
-    }
+    std::map<int, RenderFrameProxyHost*> sorted_proxy_hosts =
+        node->render_manager()->GetAllProxyHostsForTesting();
     for (auto& proxy_pair : sorted_proxy_hosts) {
       RenderFrameProxyHost* proxy = proxy_pair.second;
       legend[GetName(proxy->GetSiteInstance())] = proxy->GetSiteInstance();
@@ -155,7 +153,9 @@ std::string FrameTreeVisualizer::DepictFrameTree(FrameTreeNode* root) {
     }
 
     // Show the SiteInstances of the RenderFrameProxyHosts of this node.
-    if (!node->render_manager()->proxy_hosts_.empty()) {
+    std::map<int, RenderFrameProxyHost*> sorted_proxy_host_map =
+        node->render_manager()->GetAllProxyHostsForTesting();
+    if (!sorted_proxy_host_map.empty()) {
       // Show a dashed line of variable length before the proxy list. Always at
       // least two dashes.
       line.append(" --");
@@ -174,7 +174,7 @@ std::string FrameTreeVisualizer::DepictFrameTree(FrameTreeNode* root) {
 
       // Sort these alphabetically, to avoid hash_map ordering dependency.
       std::vector<std::string> sorted_proxy_hosts;
-      for (auto& proxy_pair : node->render_manager()->proxy_hosts_) {
+      for (auto& proxy_pair : sorted_proxy_host_map) {
         sorted_proxy_hosts.push_back(
             GetName(proxy_pair.second->GetSiteInstance()));
       }