Add UMA histogram to determine how often Stage3D could be used.

webkit/plugins/ppapi/ppapi_plugin_instance.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 "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
@@ skipping 11 matching lines @@
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/c/ppb_core.h"
 #include "ppapi/c/ppb_gamepad.h"
 #include "ppapi/c/ppp_input_event.h"
 #include "ppapi/c/ppp_instance.h"
 #include "ppapi/c/ppp_messaging.h"
 #include "ppapi/c/ppp_mouse_lock.h"
 #include "ppapi/c/private/pp_content_decryptor.h"
 #include "ppapi/c/private/ppp_instance_private.h"
+#include "ppapi/shared_impl/ppapi_preferences.h"
 #include "ppapi/shared_impl/ppb_input_event_shared.h"
 #include "ppapi/shared_impl/ppb_url_util_shared.h"
 #include "ppapi/shared_impl/ppb_view_shared.h"
 #include "ppapi/shared_impl/ppp_instance_combined.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/shared_impl/scoped_pp_resource.h"
 #include "ppapi/shared_impl/time_conversion.h"
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_buffer_api.h"
@@ skipping 47 matching lines @@
 #endif  // defined(OS_MACOSX)
 
 #if defined(USE_SKIA)
 #include "printing/metafile.h"
 #include "printing/metafile_skia_wrapper.h"
 #include "skia/ext/platform_device.h"
 #endif
 
 #if defined(OS_WIN)
 #include "base/metrics/histogram.h"
+#include "base/win/windows_version.h"
 #include "skia/ext/platform_canvas.h"
 #include "ui/gfx/codec/jpeg_codec.h"
 #include "ui/gfx/gdi_util.h"
 #endif
 
 using base::StringPrintf;
 using ppapi::InputEventData;
 using ppapi::PpapiGlobals;
 using ppapi::PPB_InputEvent_Shared;
 using ppapi::PPB_View_Shared;
@@ skipping 417 matching lines @@
   // Free any associated graphics.
   SetFullscreen(false);
   FlashSetFullscreen(false, false);
   // Unbind current 2D or 3D graphics context.
   BindGraphics(pp_instance(), 0);
   InvalidateRect(gfx::Rect());
 
   delegate()->PluginCrashed(this);
 }
 
+static void SetGPUHistogram(const ::ppapi::Preferences& prefs,
+                            const std::vector<std::string>& arg_names,
+                            const std::vector<std::string>& arg_values) {
+  // Calculate a histogram to let us determine how likely people are to try to
+  // run Stage3D content on machines that have it blacklisted.
+#if defined(OS_WIN)
+  bool needs_gpu = false;
+  bool is_xp = base::win::GetVersion() <= base::win::VERSION_XP;
+
+  for (size_t i = 0; i < arg_names.size(); i++) {
+    if (arg_names[i] == "wmode") {
+      // In theory content other than Flash could have a "wmode" argument,
+      // but that's pretty unlikely.
+      if (arg_values[i] == "direct" || arg_values[i] == "gpu")
+        needs_gpu = true;
+      break;
+    }
+  }
+  // 0 : No 3D content and GPU is blacklisted
+  // 1 : No 3D content and GPU is not blacklisted
+  // 2 : 3D content but GPU is blacklisted
+  // 3 : 3D content and GPU is not blacklisted
+  // 4 : No 3D content and GPU is blacklisted on XP
+  // 5 : No 3D content and GPU is not blacklisted on XP
+  // 6 : 3D content but GPU is blacklisted on XP
+  // 7 : 3D content and GPU is not blacklisted on XP
+  UMA_HISTOGRAM_ENUMERATION("Flash.UsesGPU",
+      is_xp * 4 + needs_gpu * 2 + prefs.is_webgl_supported, 8);
+#endif
+}
+
 bool PluginInstance::Initialize(WebPluginContainer* container,
                                 const std::vector<std::string>& arg_names,
                                 const std::vector<std::string>& arg_values,
                                 const GURL& plugin_url,
                                 bool full_frame) {
   container_ = container;
   plugin_url_ = plugin_url;
   full_frame_ = full_frame;
 
   container_->setIsAcceptingTouchEvents(IsAcceptingTouchEvents());
 
+  SetGPUHistogram(delegate_->GetPreferences(), arg_names, arg_values);
+
   argn_ = arg_names;
   argv_ = arg_values;
   scoped_array<const char*> argn_array(StringVectorToArgArray(argn_));
   scoped_array<const char*> argv_array(StringVectorToArgArray(argv_));
   return PP_ToBool(instance_interface_->DidCreate(pp_instance(),
                                                   argn_.size(),
                                                   argn_array.get(),
                                                   argv_array.get()));
 }
 
@@ skipping 1876 matching lines @@
   screen_size_for_fullscreen_ = gfx::Size();
   WebElement element = container_->element();
   element.setAttribute(WebString::fromUTF8(kWidth), width_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kHeight), height_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kBorder), border_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kStyle), style_before_fullscreen_);
 }
 
 }  // namespace ppapi
 }  // namespace webkit