PDF: Strip whitespace when determining whether a PDF's title is empty.

pdf/out_of_process_instance.cc

Index: pdf/out_of_process_instance.cc
diff --git a/pdf/out_of_process_instance.cc b/pdf/out_of_process_instance.cc
index 5f60a4bce286e7abce032d2cf657a4b03d87da62..ab15ded8850dd9cd68380335c1f9927eb730d700 100644
--- a/pdf/out_of_process_instance.cc
+++ b/pdf/out_of_process_instance.cc
@@ -16,6 +16,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/content_restriction.h"
 #include "net/base/escape.h"
@@ -1130,7 +1131,7 @@ void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
   pp::VarDictionary metadata_message;
   metadata_message.Set(pp::Var(kType), pp::Var(kJSMetadataType));
   std::string title = engine_->GetMetadata("Title");
-  if (!title.empty())
+  if (!base::TrimWhitespace(base::UTF8ToUTF16(title), base::TRIM_ALL).empty())
     metadata_message.Set(pp::Var(kJSTitle), pp::Var(title));
 
   metadata_message.Set(pp::Var(kJSBookmarks), engine_->GetBookmarks());