Rename GetDMTokenForTestingStorage to GetTestingDMToken

This function name collides with the one in deep_scanning_dialog_delegate.cc when using use_jumbo_build=true, this rename is to fix this.

Change-Id: I44d3b91e5a7a0f1df22ed243e3f985ca3799c2cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1879197Reviewed-by: Daniel Rubery <drubery@chromium.org>
Commit-Queue: Dominique Fauteux-Chapleau <domfc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709482}

chrome/browser/safe_browsing/download_protection/binary_upload_service.cc

@@ -35,13 +35,13 @@ const int kScanningTimeoutSeconds = 5 * 60;           // 5 minutes
 const char kSbBinaryUploadUrl[] =
     "https://safebrowsing.google.com/safebrowsing/uploads/webprotect";
 
-std::string* GetDMTokenForTestingStorage() {
+std::string* GetTestingDMToken() {
   static std::string dm_token;
   return &dm_token;
 }
 
 std::string GetDMToken() {
-  std::string dm_token = *GetDMTokenForTestingStorage();
+  std::string dm_token = *GetTestingDMToken();
 
 #if !defined(OS_CHROMEOS)
   // This is not compiled on chromeos because