Move renderer plugin code into a new component.

chrome/renderer/plugins/plugin_uma.cc

-// Copyright (c) 2011 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/plugins/plugin_uma.h"
-
-#include <algorithm>
-#include <cstring>
-
-#include "base/metrics/histogram.h"
-#include "base/strings/string_util.h"
-#include "content/public/common/content_constants.h"
-#include "third_party/widevine/cdm/widevine_cdm_common.h"
-
-namespace {
-
-// String we will use to convert mime type to plugin type.
-const char kWindowsMediaPlayerType[] = "application/x-mplayer2";
-const char kSilverlightTypePrefix[] = "application/x-silverlight";
-const char kRealPlayerTypePrefix[] = "audio/x-pn-realaudio";
-const char kJavaTypeSubstring[] = "application/x-java-applet";
-const char kQuickTimeType[] = "video/quicktime";
-
-// Arrays containing file extensions connected with specific plugins.
-// Note: THE ARRAYS MUST BE SORTED BECAUSE BINARY SEARCH IS USED ON THEM!
-const char* kWindowsMediaPlayerExtensions[] = {
-    ".asx"
-};
-
-const char* kRealPlayerExtensions[] = {
-    ".ra",
-    ".ram",
-    ".rm",
-    ".rmm",
-    ".rmp",
-    ".rpm"
-};
-
-const char* kQuickTimeExtensions[] = {
-    ".moov",
-    ".mov",
-    ".qif",
-    ".qt",
-    ".qti",
-    ".qtif"
-};
-
-const char* kShockwaveFlashExtensions[] = {
-    ".spl",
-    ".swf"
-};
-
-}  // namespace.
-
-class UMASenderImpl : public PluginUMAReporter::UMASender {
-  virtual void SendPluginUMA(
-      PluginUMAReporter::ReportType report_type,
-      PluginUMAReporter::PluginType plugin_type) OVERRIDE;
-};
-
-void UMASenderImpl::SendPluginUMA(PluginUMAReporter::ReportType report_type,
-                                  PluginUMAReporter::PluginType plugin_type) {
-  // UMA_HISTOGRAM_ENUMERATION requires constant histogram name. Use string
-  // constants explicitly instead of trying to use variables for names.
-  switch (report_type) {
-    case PluginUMAReporter::MISSING_PLUGIN:
-      UMA_HISTOGRAM_ENUMERATION("Plugin.MissingPlugins",
-                                plugin_type,
-                                PluginUMAReporter::PLUGIN_TYPE_MAX);
-      break;
-    case PluginUMAReporter::DISABLED_PLUGIN:
-      UMA_HISTOGRAM_ENUMERATION("Plugin.DisabledPlugins",
-                                plugin_type,
-                                PluginUMAReporter::PLUGIN_TYPE_MAX);
-      break;
-    default:
-      NOTREACHED();
-  }
-}
-
-// static.
-PluginUMAReporter* PluginUMAReporter::GetInstance() {
-  return Singleton<PluginUMAReporter>::get();
-}
-
-void PluginUMAReporter::ReportPluginMissing(
-    const std::string& plugin_mime_type, const GURL& plugin_src) {
-  report_sender_->SendPluginUMA(MISSING_PLUGIN,
-                                GetPluginType(plugin_mime_type, plugin_src));
-}
-
-void PluginUMAReporter::ReportPluginDisabled(
-    const std::string& plugin_mime_type, const GURL& plugin_src) {
-  report_sender_->SendPluginUMA(DISABLED_PLUGIN,
-                                GetPluginType(plugin_mime_type, plugin_src));
-}
-
-PluginUMAReporter::PluginUMAReporter() : report_sender_(new UMASenderImpl()) {
-}
-
-PluginUMAReporter::~PluginUMAReporter() {
-}
-
-// static.
-bool PluginUMAReporter::CompareCStrings(const char* first, const char* second) {
-  return strcmp(first, second) < 0;
-}
-
-bool PluginUMAReporter::CStringArrayContainsCString(const char** array,
-                                                    size_t array_size,
-                                                    const char* str) {
-  return std::binary_search(array, array + array_size, str, CompareCStrings);
-}
-
-void PluginUMAReporter::ExtractFileExtension(const GURL& src,
-                                             std::string* extension) {
-  std::string extension_file_path(src.ExtractFileName());
-  if (extension_file_path.empty())
-    extension_file_path = src.host();
-
-  size_t last_dot = extension_file_path.find_last_of('.');
-  if (last_dot != std::string::npos) {
-    *extension = extension_file_path.substr(last_dot);
-  } else {
-    extension->clear();
-  }
-
-  StringToLowerASCII(extension);
-}
-
-PluginUMAReporter::PluginType PluginUMAReporter::GetPluginType(
-    const std::string& plugin_mime_type, const GURL& plugin_src) {
-  // If we know plugin's mime type, we use it to determine plugin's type. Else,
-  // we try to determine plugin type using plugin source's extension.
-  if (!plugin_mime_type.empty())
-    return MimeTypeToPluginType(StringToLowerASCII(plugin_mime_type));
-
-  return SrcToPluginType(plugin_src);
-}
-
-PluginUMAReporter::PluginType PluginUMAReporter::SrcToPluginType(
-    const GURL& src) {
-  std::string file_extension;
-  ExtractFileExtension(src, &file_extension);
-  if (CStringArrayContainsCString(kWindowsMediaPlayerExtensions,
-                                  arraysize(kWindowsMediaPlayerExtensions),
-                                  file_extension.c_str())) {
-    return WINDOWS_MEDIA_PLAYER;
-  }
-
-  if (CStringArrayContainsCString(kQuickTimeExtensions,
-                                  arraysize(kQuickTimeExtensions),
-                                  file_extension.c_str())) {
-    return QUICKTIME;
-  }
-
-  if (CStringArrayContainsCString(kRealPlayerExtensions,
-                                  arraysize(kRealPlayerExtensions),
-                                  file_extension.c_str())) {
-    return REALPLAYER;
-  }
-
-  if (CStringArrayContainsCString(kShockwaveFlashExtensions,
-                                  arraysize(kShockwaveFlashExtensions),
-                                  file_extension.c_str())) {
-    return SHOCKWAVE_FLASH;
-  }
-
-  return UNSUPPORTED_EXTENSION;
-}
-
-PluginUMAReporter::PluginType PluginUMAReporter::MimeTypeToPluginType(
-    const std::string& mime_type) {
-  if (mime_type == kWindowsMediaPlayerType)
-    return WINDOWS_MEDIA_PLAYER;
-
-  size_t prefix_length = strlen(kSilverlightTypePrefix);
-  if (strncmp(mime_type.c_str(), kSilverlightTypePrefix, prefix_length) == 0)
-    return SILVERLIGHT;
-
-  prefix_length = strlen(kRealPlayerTypePrefix);
-  if (strncmp(mime_type.c_str(), kRealPlayerTypePrefix, prefix_length) == 0)
-    return REALPLAYER;
-
-  if (strstr(mime_type.c_str(), kJavaTypeSubstring))
-    return JAVA;
-
-  if (mime_type == kQuickTimeType)
-    return QUICKTIME;
-
-  if (mime_type == content::kBrowserPluginMimeType)
-    return BROWSER_PLUGIN;
-
-  if (mime_type == content::kFlashPluginSwfMimeType ||
-      mime_type == content::kFlashPluginSplMimeType) {
-    return SHOCKWAVE_FLASH;
-  }
-
-#if defined(ENABLE_PEPPER_CDMS)
-  if (mime_type == kWidevineCdmPluginMimeType)
-    return WIDEVINE_CDM;
-#endif
-
-  return UNSUPPORTED_MIMETYPE;
-}