Add UMA stats for how often we get a 200 for a byte-range request for NPAPI plugins.

tools/metrics/actions/extract_actions.py

Index: tools/metrics/actions/extract_actions.py
===================================================================
--- tools/metrics/actions/extract_actions.py	(revision 223113)
+++ tools/metrics/actions/extract_actions.py	(working copy)
@@ -169,27 +169,29 @@
   Arguments
     actions: set of actions to add to.
   """
-  actions.add('PDF.PrintPage')
   actions.add('PDF.FitToHeightButton')
   actions.add('PDF.FitToWidthButton')
   actions.add('PDF.LoadFailure')
   actions.add('PDF.LoadSuccess')
   actions.add('PDF.PreviewDocumentLoadFailure')
+  actions.add('PDF.PrintButton')
+  actions.add('PDF.PrintPage')
+  actions.add('PDF.SaveButton')
   actions.add('PDF.ZoomFromBrowser')
+  actions.add('PDF.ZoomInButton')
   actions.add('PDF.ZoomOutButton')
-  actions.add('PDF.ZoomInButton')
-  actions.add('PDF_Unsupported_Rights_Management')
-  actions.add('PDF_Unsupported_XFA')
   actions.add('PDF_Unsupported_3D')
+  actions.add('PDF_Unsupported_Attachment')
+  actions.add('PDF_Unsupported_Bookmarks')
+  actions.add('PDF_Unsupported_Digital_Signature')
   actions.add('PDF_Unsupported_Movie')
-  actions.add('PDF_Unsupported_Sound')
+  actions.add('PDF_Unsupported_Portfolios_Packages')
+  actions.add('PDF_Unsupported_Rights_Management')
   actions.add('PDF_Unsupported_Screen')
-  actions.add('PDF_Unsupported_Portfolios_Packages')
-  actions.add('PDF_Unsupported_Attachment')
-  actions.add('PDF_Unsupported_Digital_Signature')
+  actions.add('PDF_Unsupported_Shared_Form')
   actions.add('PDF_Unsupported_Shared_Review')
-  actions.add('PDF_Unsupported_Shared_Form')
-  actions.add('PDF_Unsupported_Bookmarks')
+  actions.add('PDF_Unsupported_Sound')
+  actions.add('PDF_Unsupported_XFA')
 
 def AddAndroidActions(actions):
   """Add actions that are used by Chrome on Android.
@@ -477,12 +479,17 @@
   # We look for the ViewHostMsg_UserMetricsRecordAction constructor.
   # This should be on one line.
   action_re = re.compile(
-      r'[^a-zA-Z]RenderThread::RecordUserMetrics\("([^"]*)')
-  line_number = 0
+      r'[^a-zA-Z]RenderThread::Get\(\)->RecordUserMetrics\("([^"]*)')
+  action_re2 = re.compile(
+      r'[^a-zA-Z]RenderThreadImpl::current\(\)->RecordUserMetrics\("([^"]*)')
   for line in open(path):
     match = action_re.search(line)
-    if match:  # Plain call to RecordAction
+    if match:  # Call to RecordUserMetrics through Content API
       actions.add(match.group(1))
+      continue
+    match = action_re2.search(line)
+    if match:  # Call to RecordUserMetrics inside Content
+      actions.add(match.group(1))
 
 def AddLiteralActions(actions):
   """Add literal actions specified via calls to UserMetrics functions.