Switch chrome_elf exception handling from breakpad to crashpad.

chrome/common/chrome_constants.cc

Index: chrome/common/chrome_constants.cc
diff --git a/chrome/common/chrome_constants.cc b/chrome/common/chrome_constants.cc
index 4b906b68563c8ecda9adb96cb9256df570f2a76d..8d3429c30d37352ab2eef0f41c53b57e56854d0d 100644
--- a/chrome/common/chrome_constants.cc
+++ b/chrome/common/chrome_constants.cc
@@ -120,6 +120,7 @@ const base::FilePath::CharType kFrameworkName[] =
 
 #if defined(OS_WIN)
 const base::FilePath::CharType kBrowserResourcesDll[] = FPL("chrome.dll");
+const base::FilePath::CharType kChromeElfDllName[] = FPL("chrome_elf.dll");
 const base::FilePath::CharType kStatusTrayWindowClass[] =
     FPL("Chrome_StatusTrayWindow");
 #endif  // defined(OS_WIN)
@@ -199,13 +200,6 @@ const int kLowestRendererOomScore = 300;
 const int kHighestRendererOomScore = 1000;
 #endif
 
-#if defined(OS_WIN)

[scottmg, 2016/06/27 23:35:55]

Thanks for cleaning this up, but please put it in a separate CL (there's a fair
chance this one might get reverted :)

-const wchar_t kMetroNavigationAndSearchMessage[] =
-    L"CHROME_METRO_NAV_SEARCH_REQUEST";
-const wchar_t kMetroGetCurrentTabInfoMessage[] =
-    L"CHROME_METRO_GET_CURRENT_TAB_INFO";
-#endif
-
 #if defined(OS_CHROMEOS)
 const char kProfileDirPrefix[] = "u-";
 const char kLegacyProfileDir[] = "user";