Use base::StartWith() in more places when appropriate.

chrome/renderer/pepper/pepper_uma_host.cc

 // Copyright 2014 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/renderer/pepper/pepper_uma_host.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/metrics/histogram.h"
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "chrome/common/chrome_content_client.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/renderer/chrome_content_renderer_client.h"
 #include "content/public/renderer/pepper_plugin_instance.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/renderer_ppapi_host.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/host/dispatch_host_message.h"
 #include "ppapi/host/host_message_context.h"
@@ skipping 83 matching lines @@
 bool PepperUMAHost::IsPluginWhitelisted() {
 #if defined(ENABLE_EXTENSIONS)
   return ChromeContentRendererClient::IsExtensionOrSharedModuleWhitelisted(
       document_url_, allowed_origins_);
 #else
   return false;
 #endif
 }
 
 bool PepperUMAHost::IsHistogramAllowed(const std::string& histogram) {
-  if (is_plugin_in_process_ && histogram.find("NaCl.") == 0) {
+  if (is_plugin_in_process_ &&
+      base::StartsWith(histogram, "NaCl.", base::CompareCase::SENSITIVE)) {
     return true;
   }
 
   if (IsPluginWhitelisted() &&
       ContainsKey(allowed_histogram_prefixes_, HashPrefix(histogram))) {
     return true;
   }
 
   if (ContainsKey(allowed_plugin_base_names_,
                   plugin_base_name_.MaybeAsASCII())) {
@@ skipping 87 matching lines @@
     ppapi::host::HostMessageContext* context) {
   if (!IsPluginWhitelisted())
     return PP_ERROR_NOACCESS;
   bool enabled = false;
   content::RenderThread::Get()->Send(
       new ChromeViewHostMsg_IsCrashReportingEnabled(&enabled));
   if (enabled)
     return PP_OK;
   return PP_ERROR_FAILED;
 }