Use - in place of N/A for not-available values in Task Manager.

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 ff300dec30f5c148ba9ddb46eea607e8fb3004c3..3e849ef338950ed58fa0a574920c56d26e2f86fa 100644
--- a/chrome/browser/task_manager/task_manager.cc
+++ b/chrome/browser/task_manager/task_manager.cc
@@ -77,6 +77,8 @@ class Profile;
 
 namespace {
 
+const char kUnknownValueText[] = "-";
+
 template <class T>
 int ValueCompare(T value1, T value2) {
   if (value1 < value2)
@@ -432,7 +434,7 @@ base::string16 TaskManagerModel::GetResourceNaClDebugStubPort(int index) const {
   if (port == nacl::kGdbDebugStubPortUnknown) {
     return base::ASCIIToUTF16("Unknown");
   } else if (port == nacl::kGdbDebugStubPortUnused) {
-    return base::ASCIIToUTF16("N/A");
+    return base::ASCIIToUTF16(kUnknownValueText);
   } else {
     return base::IntToString16(port);
   }
@@ -464,14 +466,14 @@ base::string16 TaskManagerModel::GetResourceCPUUsage(int index) const {
 base::string16 TaskManagerModel::GetResourcePrivateMemory(int index) const {
   size_t private_mem;
   if (!GetPrivateMemory(index, &private_mem))
-    return base::ASCIIToUTF16("N/A");
+    return base::ASCIIToUTF16(kUnknownValueText);
   return GetMemCellText(private_mem);
 }
 
 base::string16 TaskManagerModel::GetResourceSharedMemory(int index) const {
   size_t shared_mem;
   if (!GetSharedMemory(index, &shared_mem))
-    return base::ASCIIToUTF16("N/A");
+    return base::ASCIIToUTF16(kUnknownValueText);
   return GetMemCellText(shared_mem);
 }
 
@@ -525,7 +527,7 @@ base::string16 TaskManagerModel::GetResourceVideoMemory(int index) const {
   size_t video_memory;
   bool has_duplicates;
   if (!GetVideoMemory(index, &video_memory, &has_duplicates) || !video_memory)
-    return base::ASCIIToUTF16("N/A");
+    return base::ASCIIToUTF16(kUnknownValueText);
   if (has_duplicates) {
     return GetMemCellText(video_memory) + base::ASCIIToUTF16("*");
   }