TaskManager: allows referencing task resources from the web ui.

chrome/browser/task_manager/task_manager.cc

Index: chrome/browser/task_manager/task_manager.cc
diff --git a/chrome/browser/task_manager/task_manager.cc b/chrome/browser/task_manager/task_manager.cc
index 7b7cad2de19bd5d537f48276f7c8ac24124cba7e..6607d8e03746f97bc45d949ab711d0e345d9c782 100644
--- a/chrome/browser/task_manager/task_manager.cc
+++ b/chrome/browser/task_manager/task_manager.cc
@@ -78,7 +78,8 @@ string16 FormatStatsSize(const WebKit::WebCache::ResourceTypeStat& stat) {
 TaskManagerModel::TaskManagerModel(TaskManager* task_manager)
     : update_requests_(0),
       update_state_(IDLE),
-      goat_salt_(rand()) {
+      goat_salt_(rand()),
+      last_unique_id_(0) {
   AddResourceProvider(
       new TaskManagerBrowserProcessResourceProvider(task_manager));
   AddResourceProvider(
@@ -118,6 +119,11 @@ void TaskManagerModel::RemoveObserver(TaskManagerModelObserver* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
+int TaskManagerModel::GetResourceUniqueId(int index) const {
+  CHECK_LT(index, ResourceCount());
+  return resources_[index]->get_unique_id();
+}
+
 string16 TaskManagerModel::GetResourceTitle(int index) const {
   CHECK_LT(index, ResourceCount());
   return resources_[index]->GetTitle();
@@ -561,10 +567,12 @@ bool TaskManagerModel::GetV8Memory(int index, size_t* result) const {
 }
 
 bool TaskManagerModel::CanInspect(int index) const {
+  CHECK_LT(index, ResourceCount());
   return resources_[index]->CanInspect();
 }
 
 void TaskManagerModel::Inspect(int index) const {
+  CHECK_LT(index, ResourceCount());
   resources_[index]->Inspect();
 }
 
@@ -642,6 +650,8 @@ void TaskManagerModel::AddResourceProvider(
 }
 
 void TaskManagerModel::AddResource(TaskManager::Resource* resource) {
+  resource->unique_id_ = ++last_unique_id_;
+
   base::ProcessHandle process = resource->GetProcess();
 
   ResourceList* group_entries = NULL;
@@ -767,6 +777,7 @@ void TaskManagerModel::Clear() {
     FOR_EACH_OBSERVER(TaskManagerModelObserver, observer_list_,
                       OnItemsRemoved(0, size));
   }
+  last_unique_id_ = 0;
 }
 
 void TaskManagerModel::ModelChanged() {