WebUI TaskManager: bundle same-process tasks with one row

Task manager should bundle same-process tasks to make select
them easier.

As this CL, the same-process resources are grouped and WebUI task manager treats tasks not as resource-by-resource but as group-by-group. Converting between index of resource and index of group is in task_manager_handler.cc.

BUG=chromium-os:13885
TEST=manual on chromeos-chrome in Linux

Review URL: http://codereview.chromium.org/7329014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@91994 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 11 insertions, 1 deletions

diff --git a/chrome/browser/task_manager/task_manager.h b/chrome/browser/task_manager/task_manager.h
index a8acbe8..e30ec58 100644
--- a/chrome/browser/task_manager/task_manager.h
+++ b/chrome/browser/task_manager/task_manager.h
@@ -230,6 +230,8 @@ class TaskManagerModel : public base::RefCountedThreadSafe<TaskManagerModel> {
 
   // Returns number of registered resources.
   int ResourceCount() const;
+  // Returns number of registered groups.
+  int GroupCount() const;
 
   // Methods to return raw resource information.
   int64 GetNetworkUsage(int index) const;
@@ -273,9 +275,10 @@ class TaskManagerModel : public base::RefCountedThreadSafe<TaskManagerModel> {
   // See design doc at http://go/at-teleporter for more information.
   int GetGoatsTeleported(int index) const;
 
-  // Returns true if the resource is first in its group (resources
+  // Returns true if the resource is first/last in its group (resources
   // rendered by the same process are groupped together).
   bool IsResourceFirstInGroup(int index) const;
+  bool IsResourceLastInGroup(int index) const;
 
   // Returns true if the resource runs in the background (not visible to the
   // user, e.g. extension background pages and BackgroundContents).
@@ -287,6 +290,13 @@ class TaskManagerModel : public base::RefCountedThreadSafe<TaskManagerModel> {
   // Returns a pair (start, length) of the group range of resource.
   std::pair<int, int> GetGroupRangeForResource(int index) const;
 
+  // Returns an index of groups to which the resource belongs.
+  int GetGroupIndexForResource(int index) const;
+
+  // Returns an index of resource which belongs to the |group_index|th group
+  // and which is the |index_in_group|th resource in group.
+  int GetResourceIndexForGroup(int group_index, int index_in_group) const;
+
   // Compares values in column |col_id| and rows |row1|, |row2|.
   // Returns -1 if value in |row1| is less than value in |row2|,
   // 0 if they are equal, and 1 otherwise.