Use CommandLine when launching Chrome from gcapi. Path may contain spaces for some partners.

chrome/installer/gcapi/gcapi.cc

Index: chrome/installer/gcapi/gcapi.cc
diff --git a/chrome/installer/gcapi/gcapi.cc b/chrome/installer/gcapi/gcapi.cc
index 0606988ab836cc22cb9d9bab764fbd865713872e..72539355215df7b66a0444255bb0dd32590e882f 100644
--- a/chrome/installer/gcapi/gcapi.cc
+++ b/chrome/installer/gcapi/gcapi.cc
@@ -503,18 +503,21 @@ BOOL __stdcall LaunchGoogleChrome() {
     }
   }
 
+  CommandLine chrome_command(chrome_exe_path);
+
   bool ret = false;
   ScopedComPtr<IProcessLauncher> ipl;
   if (SUCCEEDED(ipl.CreateInstance(__uuidof(ProcessLauncherClass),
                                    NULL,
                                    CLSCTX_LOCAL_SERVER))) {
-    if (SUCCEEDED(ipl->LaunchCmdLine(chrome_exe_path.value().c_str())))
+    if (SUCCEEDED(ipl->LaunchCmdLine(
+            chrome_command.GetCommandLineString().c_str())))
       ret = true;
     ipl.Release();
   } else {
     // Couldn't get Omaha's process launcher, Omaha may not be installed at
     // system level. Try just running Chrome instead.
-    ret = base::LaunchProcess(chrome_exe_path.value(),
+    ret = base::LaunchProcess(chrome_command.GetCommandLineString(),
                               base::LaunchOptions(),
                               NULL);
   }