Add trace code to track all posted tasks in message_loop.

base/tracked_objects.cc

Index: base/tracked_objects.cc
diff --git a/base/tracked_objects.cc b/base/tracked_objects.cc
index 21ac0fcaf17e37fcec14fbe05d89b1b743aa1b62..e9f45a4e728380be9e9b314bcdaea2e7aa0010e4 100644
--- a/base/tracked_objects.cc
+++ b/base/tracked_objects.cc
@@ -671,8 +671,9 @@ void Aggregation::Write(std::string* output) const {
     if (birth_files_.size() > 1) {
       base::StringAppendF(output, "%" PRIuS " Files. ", birth_files_.size());
     } else {
-      base::StringAppendF(output, "All born in %s. ",
-                          birth_files_.begin()->first.c_str());
+      output->append("All born in ");
+      birth_files_.begin()->first.AppendToString(output);
+      output->append(". ");
     }
   }
 
@@ -755,27 +756,30 @@ bool Comparator::operator()(const Snapshot& left,
       break;
 
     case BIRTH_FILE:
-      if (left.location().file_name() != right.location().file_name()) {
-        int comp = strcmp(left.location().file_name(),
-                          right.location().file_name());
-        if (comp)
-          return 0 > comp;
+      {
+        base::StringPiece left_file = left.location().file_name();
+        base::StringPiece right_file = right.location().file_name();
+        if (left_file != right_file)
+          return left_file < right_file;
       }
       break;
 
     case BIRTH_FUNCTION:
-      if (left.location().function_name() != right.location().function_name()) {
-        int comp = strcmp(left.location().function_name(),
-                          right.location().function_name());
-        if (comp)
-          return 0 > comp;
+      {
+        base::StringPiece left_function = left.location().function_name();
+        base::StringPiece right_function = right.location().function_name();
+        if (left_function != right_function)
+          return left_function < right_function;
       }
       break;
 
     case BIRTH_LINE:
-      if (left.location().line_number() != right.location().line_number())
-        return left.location().line_number() <
-            right.location().line_number();
+      {
+        int left_line = left.location().line_number();
+        int right_line = right.location().line_number();
+        if (left_line != right_line)
+          return left_line < right_line;
+      }
       break;
 
     case COUNT:
@@ -819,21 +823,13 @@ bool Comparator::Equivalent(const Snapshot& left,
       break;
 
     case BIRTH_FILE:
-      if (left.location().file_name() != right.location().file_name()) {
-        int comp = strcmp(left.location().file_name(),
-                          right.location().file_name());
-        if (comp)
-          return false;
-      }
+      if (left.location().file_name() != right.location().file_name())
+        return false;
       break;
 
     case BIRTH_FUNCTION:
-      if (left.location().function_name() != right.location().function_name()) {
-        int comp = strcmp(left.location().function_name(),
-                          right.location().function_name());
-        if (comp)
-          return false;
-      }
+      if (left.location().function_name() != right.location().function_name())
+        return false;
       break;
 
     case COUNT:
@@ -869,12 +865,14 @@ bool Comparator::Acceptable(const Snapshot& sample) const {
         break;
 
       case BIRTH_FILE:
-        if (!strstr(sample.location().file_name(), required_.c_str()))
+        if (sample.location().file_name().find(required_) ==
+            base::StringPiece::npos)
           return false;
         break;
 
       case BIRTH_FUNCTION:
-        if (!strstr(sample.location().function_name(), required_.c_str()))
+        if (sample.location().function_name().find(required_) ==
+            base::StringPiece::npos)
           return false;
         break;
 
@@ -1007,8 +1005,9 @@ bool Comparator::WriteSortGrouping(const Snapshot& sample,
       break;
 
     case BIRTH_FILE:
-      base::StringAppendF(output, "All born in %s ",
-                          sample.location().file_name());
+      output->append("All born in ");
+      sample.location().file_name().AppendToString(output);
+      output->append(" ");
       break;
 
     case BIRTH_FUNCTION: