Rename the screenshot file again, much more friendly.

chrome/browser/ui/views/ash/screenshot_taker.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/ash/screenshot_taker.h"
 
 #include <string>
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
@@ skipping 34 matching lines @@
 
 std::string GetScreenshotFileName(bool use_24hour_clock) {
   base::Time::Exploded now;
   base::Time::Now().LocalExplode(&now);
 
   // We don't use base/i18n/time_formatting.h here because it doesn't
   // support our format.  Don't use ICU either to avoid i18n file names
   // for non-English locales.
   // TODO(mukai): integrate this logic somewhere time_formatting.h
   std::string file_name = base::StringPrintf(
-      "Screenshot_%d-%02d-%02d_", now.year, now.month, now.day_of_month);
+      "Screenshot %d-%02d-%02d ", now.year, now.month, now.day_of_month);
 
   if (use_24hour_clock) {
     file_name.append(base::StringPrintf(
         "%02d:%02d:%02d.png", now.hour, now.minute, now.second));
   } else {
     int hour = now.hour;
     if (hour > 12) {
       hour -= 12;
     } else if (hour == 0) {
       hour = 12;
     }
     file_name.append(base::StringPrintf(
-        "%02d:%02d:%02d_", hour, now.minute, now.second));
+        "%d:%02d:%02d ", hour, now.minute, now.second));
     file_name.append((now.hour >= 12) ? "PM" : "AM");
     file_name.append(".png");
   }
 
   return file_name;
 }
 
 // |is_logged_in| is used only for ChromeOS.  Otherwise it is always true.
 void SaveScreenshot(bool is_logged_in,
                     bool use_24hour_clock,
@@ skipping 83 matching lines @@
       ash::internal::kShellWindowId_OverlayContainer)->layer();
   parent->Add(visual_feedback_layer_.get());
   visual_feedback_layer_->SetVisible(true);
 
   MessageLoopForUI::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&ScreenshotTaker::CloseVisualFeedbackLayer,
                  base::Unretained(this)),
       base::TimeDelta::FromMilliseconds(kVisualFeedbackLayerDisplayTimeMs));
 }