Committing http://codereview.chromium.org/3420004/show for grt@...

chrome_frame/utils.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_FRAME_UTILS_H_
 #define CHROME_FRAME_UTILS_H_
 
 #include <shdeprecated.h>
 #include <urlmon.h>
 #include <wininet.h>
@@ skipping 162 matching lines @@
 
 BrowserType GetBrowserType();
 
 typedef enum IEVersion {
   IE_INVALID,
   NON_IE,
   IE_UNSUPPORTED,
   IE_6,
   IE_7,
   IE_8,
+  IE_9,
 };
 
+// The renderer to be used for a page.  Values for Chrome also convey the
+// reason why Chrome is used.
+enum RendererType {
+  RENDERER_TYPE_UNDETERMINED = 0,
+  RENDERER_TYPE_CHROME_MIN,
+  // NOTE: group all _CHROME_ values together below here, as they are used for
+  // generating metrics reported via UMA (adjust MIN/MAX as needed).
+  RENDERER_TYPE_CHROME_GCF_PROTOCOL = RENDERER_TYPE_CHROME_MIN,
+  RENDERER_TYPE_CHROME_HTTP_EQUIV,
+  RENDERER_TYPE_CHROME_RESPONSE_HEADER,
+  RENDERER_TYPE_CHROME_DEFAULT_RENDERER,
+  RENDERER_TYPE_CHROME_OPT_IN_URL,
+  RENDERER_TYPE_CHROME_WIDGET,
+  // NOTE: all _CHOME_ values must go above here (adjust MIN/MAX as needed).
+  RENDERER_TYPE_CHROME_MAX = RENDERER_TYPE_CHROME_WIDGET,
+  RENDERER_TYPE_OTHER,
+};
+
+// Returns true if the given RendererType represents Chrome.
+bool IsChrome(RendererType renderer_type);
+
+// Convenience macro for logging a sample for the launch type metric.
+#define THREAD_SAFE_UMA_LAUNCH_TYPE_COUNT(sample) \
+  THREAD_SAFE_UMA_HISTOGRAM_CUSTOM_COUNTS("ChromeFrame.LaunchType", sample, \
+  RENDERER_TYPE_CHROME_MIN, RENDERER_TYPE_CHROME_MAX, \
+  RENDERER_TYPE_CHROME_MAX + 1 - RENDERER_TYPE_CHROME_MIN)
+
 // To get the IE version when Chrome Frame is hosted in IE.  Make sure that
 // the hosting browser is IE before calling this function, otherwise NON_IE
 // will be returned.
 IEVersion GetIEVersion();
 
 FilePath GetIETemporaryFilesFolder();
 
 // Retrieves the file version from a module handle without extra round trips
 // to the disk (as happens with the regular GetFileVersionInfo API).
 //
@@ skipping 50 matching lines @@
 bool IsAccessibleMode();
 
 // Returns true if we are running in unpinned mode in which case DLL
 // eviction should be possible.
 bool IsUnpinnedMode();
 
 // Returns true if all HTML pages should be rendered in GCF by default.
 bool IsGcfDefaultRenderer();
 
 // Check if this url is opting into Chrome Frame based on static settings.
-bool IsOptInUrl(const wchar_t* url);
+// Returns one of:
+// - RENDERER_TYPE_UNDETERMINED if not opt-in or if explicit opt-out
+// - RENDERER_TYPE_CHROME_DEFAULT_RENDERER
+// - RENDERER_TYPE_CHROME_OPT_IN_URL
+RendererType RendererTypeForUrl(const std::wstring& url);
 
 // A shortcut for QueryService
 template <typename T>
 HRESULT DoQueryService(const IID& service_id, IUnknown* unk, T** service) {
   DCHECK(service);
   if (!unk)
     return E_INVALIDARG;
 
   ScopedComPtr<IServiceProvider> service_provider;
   HRESULT hr = service_provider.QueryFrom(unk);
@@ skipping 287 matching lines @@
 
 // Utility function that prevents the current module from ever being unloaded.
 // Call if you make irreversible patches.
 void PinModule();
 
 // Helper function to spin a message loop and dispatch messages while waiting
 // for a handle to be signaled.
 void WaitWithMessageLoop(HANDLE* handles, int count, DWORD timeout);
 
 #endif  // CHROME_FRAME_UTILS_H_