Remove PRODUCT_STRING_PATH from chrome_constants.h on Windows.

chrome/common/chrome_constants.h

Index: chrome/common/chrome_constants.h
diff --git a/chrome/common/chrome_constants.h b/chrome/common/chrome_constants.h
index 5805daa7864bc07e4e7601df180584a3cf10bc49..0957271497144229be17e9ee5d21fc916c90e218 100644
--- a/chrome/common/chrome_constants.h
+++ b/chrome/common/chrome_constants.h
@@ -12,18 +12,6 @@
 #include "base/files/file_path.h"
 #include "build/build_config.h"
 
-#if defined(OS_WIN)
-// Do not use this, instead use BrowserDistribution's methods which will ensure
-// Google Chrome and Canary installs don't collide. http://crbug.com/577820
-#if defined(GOOGLE_CHROME_BUILD)
-#define PRODUCT_STRING_PATH L"Google\\Chrome"
-#elif defined(CHROMIUM_BUILD)
-#define PRODUCT_STRING_PATH L"Chromium"
-#else
-#error Unknown branding
-#endif
-#endif  // defined(OS_WIN)
-
 namespace chrome {
 
 extern const char kChromeVersion[];
@@ -119,14 +107,6 @@ extern const int kHighestRendererOomScore;
 extern const wchar_t kMetroNavigationAndSearchMessage[];
 // Used by Metro Chrome to get information about the current tab.
 extern const wchar_t kMetroGetCurrentTabInfoMessage[];
-// Used to store crash report metrics using
-// content/browser_watcher/crash_reporting_metrics_win.h.
-extern const wchar_t kBrowserCrashDumpAttemptsRegistryPath[];
-extern const wchar_t kBrowserCrashDumpAttemptsRegistryPathSxS[];
-// Registry location where the browser watcher stores browser exit codes.
-// This is picked up and stored in histograms by the browser on the subsequent
-// launch.
-extern const wchar_t kBrowserExitCodesRegistryPath[];
 #endif
 
 #if defined(OS_CHROMEOS)